I imagine that you'll be treated like royalty at the Plaza if you give them that much play. I still think it's a cool place, you can still find a lot of that early '70s opulence if you look around. I bet the suites are cool. Looking forward to hearing about it.
I agree about Hugo's, I really like the place, everything is great except the food. The ambience, the service, the retro menu. I had a retro entree last time (roast duck flambeed with anisette), was pretty happy with it. I really enjoyed Oscar's, too, although we had a problem with the manager (I assume that he's long gone by now). I'm sure it's going to be a fun trip for you guys.
Take care, say hi to Lolly for me!