greenhorn in AC

Yes, one guest for free, other guests are $25 RC's each.
BTW, the diamond lounges serve real food, not just the chips & dip as served in Vegas.

As per Noahcat, get a black card at the Borgata by showing your diamond card at the players club.
The Borgata has a black card lounge, that is much better than any diamond lounge I have been in, but the catch is each visit is $10 comp collars.

Also, the Borgata has the hottest female drink servers!!!!!!!!!!!!!!!!!!

I believe you can bring 1 additional guest if you're diamond and 3 additional guests into the diamond lounges if you're 7*; just go up to one and ask.
The Showboat has a special club 'The Foundation Room' for 7* members. Never been in it myself, so can't tell you much.
Stu

The info given on this thread is fabulous! Thanks all!

good luck on your trip. I will be in Atlantic City later in the month, February school vacation week with the hubby for a short trip away from the snow (I hope) and everyday life.

Cool.