Bathhouses differ greatly from one another. Some are pits, others palaces.
My favorite memory of an upscale bathhouse here in Florida is the weekend outdoor poolside buffets they have. They've got a couple of attendants in full kitchen whites, chef's cap and all, carving excellent roast beef to order, plus a complete choice of other foods, not some chips & dips crap.
And the opening announcement over the PA system is priceless: "The poolside buffet is now open. Gentlemen, please wear at least a towel in the serving line." LMAO!!!!
My first bathhouse experience was a bit intimidating. From an outside door I entered a long room, bare of any decoration whatsoever, just solid blank walls. At the far end was a small opening in the wall, like an old-fashioned ticket window.
It was there I bought my membership, and signed various legal forms that said I consented to whatever I found inside, and that I wasn't undercover police, etc.
Then an electric switch clanked open the lock on a brutal steel door to my left, which I opened and found - gay heaven.
But don't become intoxicated with temptation. Safe sex is mandatory! Careless sex is why most bathhouses were closed by local authorities early in the AIDS epidemic.
I won't burden you with bathhouse routine, since each one can be different, and a bright boy will catch on quickly. Walking around in a provided towel is common, but why I'm not sure -- the idea is to get naked in the steam room, sauna, hot tub, shower, playrooms, or pool if they have one.
I love quality bathhouses, but many gays hate them all, either from bad experiences or on general principal. I'd say try to pick a good one and judge for yourself. Weekends are usually best. I've always gone alone, but an experienced friend could give you confidence.