Free First Authorized User On Morgan Stanley Amex Platinum Gives Family Lounge Access

Did you know that you get the first authorized user for free with the Morgan Stanley version of the Amex platinum?

If you travel as a family, that can give you lounge access for more people, because your AU will also get guest access to priority pass lounges.

I compare the best credit cards for lounge access in my latest blog post and YouTube video:

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https://www.mileswithmary.com/blog/best-credit-cards-for-airport-lounge-access-for-families

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Traveling with kids often turns a routine airport dash into a scramble for comfort, and that’s exactly why I keep an eye on credit‑card perks that unlock lounges. The recent buzz around the American Express Platinum, especially the version tied to Morgan Stanley, promises something that families love: the ability to bring the first authorized user in for free and enjoy Priority Pass access together. In this post I break down how that benefit stacks up against other heavyweight cards, explore the hidden costs, and share real‑world tips for squeezing the most out of every lounge visit. Whether you’re a seasoned road warrior or a first‑time flyer, understanding these nuances can turn a chaotic trip into a relaxing start.

The real game‑changer for families is how that free authorized‑user slot opens up lounge entry for multiple travelers without extra fees. When the primary cardholder holds the Morgan Stanley Platinum, the linked authorized user automatically receives a Priority Pass of their own, meaning kids and partners can relax in the same quiet spaces you would otherwise have to pay for separately. This splits the cost of airport dining, shows a touch of pampering, and often includes complimentary snacks and Wi‑Fi that make layovers feel less like waiting and more like a brief vacation. I’ve tested this on several international itineraries, and the lounges consistently feel roomier when the whole crew is together, turning travel fatigue into shared excitement.

Beyond the Amex Platinum, a handful of competitors also deliver robust lounge access, each with its own flavor. The Chase Sapphire Reserve, for instance, grants unlimited Priority Pass visits after the first year, but it requires a $300 annual fee and a higher minimum spend to unlock the card’s full value. Meanwhile, the Citi Prestige and the Capital One Venture X each bundle lounge entry with travel credits that can offset the cost of flights or hotel stays. While these cards often boast broader point-earning categories, they may lack the seamless family‑oriented authorized‑user provision that makes the Morgan Stanley version especially appealing for parents juggling multiple passports and strollers.

Another angle to consider is how each card’s travel‑related perks can complement lounge access to create a more rounded travel budget. The Amex Platinum, for example, includes a $200 airline fee credit and up to $200 in Uber Cash annually, which can offset the cost of airport transfers or rideshare trips to the terminal. Meanwhile, Capital One’s Venture X adds a $300 annual travel credit and a 10‑hour free access window to select airport lounges, while Chase’s card offers a $300 statement credit for hotel stays booked through its portal. By layering these benefits, families can often recoup a sizable portion of the card’s annual fee through everyday spending, making the luxury of a quiet lounge feel more like a practical investment.

Of course, the perks come with strings attached, and the most obvious is the annual fee, which for the Morgan Stanley‑linked Amex Platinum sits at $695. That amount can feel steep for families who may only travel a few times a year, especially when the card also demands a high minimum spend to unlock the travel credits fully. Additionally, some lounges have become more crowded in recent years, meaning the promised serenity can sometimes be replaced by a bustling crowd of fellow cardholders. It’s worth weighing these trade‑offs against alternative strategies, such as purchasing day‑passes for specific airports or focusing on airline‑specific lounge programs that might align better with your usual carriers.

To get the most out of a lounge‑centric credit‑card strategy, I recommend consolidating everyday expenses onto the card that offers the highest earn rate for groceries, gas, and online shopping, then funneling those points toward travel bookings that cover flights for the whole family. Pair that with the complimentary Priority Pass access for the authorized user, and you essentially get a free ticket for one child each time you fly, which can add up quickly over multiple trips. Additionally, take advantage of the card’s dining and streaming service credits; they can offset the cost of meals at airport restaurants or entertainment during long layovers, turning what would be an extra expense into a reimbursed perk.

While credit‑card lounges dominate the conversation, there are still moments when a dedicated airline lounge or a day‑pass purchase makes more sense, especially if you fly a carrier that offers generous complimentary access for elite status members. Programs like United Club, Delta Sky Club, or American Airlines Admirals Club often provide a more consistent experience across airports, and some of them waive the need for a paid pass altogether if you hold the corresponding co‑branded credit card. Moreover, certain airports feature pay‑per‑use lounges that can be booked on the spot, giving you flexibility to dip in only when you truly need a quiet spot, rather than committing to an annual fee that may sit idle during quieter travel periods.

In the end, the best credit‑card for lounge access hinges on how often you fly, how many family members you’re traveling with, and whether you can fully leverage the ancillary credits that come with the card. If your pattern includes frequent international trips and you regularly need a place for kids to unwind, the Morgan Stanley‑linked Amex Platinum delivers a compelling blend of free authorized‑user lounge entry, generous travel credits, and a robust rewards ecosystem. However, if your travel is occasional or you prefer a lower‑cost alternative, a Chase Sapphire Reserve or Capital One Venture X might offer a more budget‑friendly path while still unlocking plenty of lounge time. Whichever route you choose, a little research and strategic spending can transform airport waiting rooms into mini‑retreats for the whole family.