I have stayed at RPR and used the fitness center for free with my Loews First card. It's a great facility. I have always gotten my welcome amenity at all three resorts even when booking with the entertainment rate. I'm not sure how it works with the AAA rate but it will probably depend on who checks you in.
It is kind of hidden but there is a nice co-ed spa in back of the locker rooms. You don't need to carry the card with you, just tell them you are Loews First and your room number.
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