Welcome to FT.
You can pay for a day pass to the Red Carpet Club (RCC). It runs $50 and, IMHO, is an even bigger waste of money than buying a spare tyre for your motorboat. The only useful RCCs are the int'l ones which offer showers after a long haul flight.
Keep in mind the $50 lets one enter the door--that's about it. Oh, and it will buy you a few soft drinks.
Save your money.