What should we serve for a delicious wedding brunch buffet?

Is the "no cooking allowed" specific to using the kitchen? I just attended a lovely catered brunch where the caterers set up a waffle bar (brought their own waffle iron) and an omelette bar (brought their own two-burner stove top). They did no cooking in the kitchen at all. Would something like this be an option?

We are about to start contacting caterers, but we don't have a strong idea of what would be good to serve at a brunch buffet (other than bacon). No actual cooking is allowed. In this situation I would very much let the caterers make suggestions for things they know they can pull off successfully. Eggs, for example, are right out. But you could do cold poached salmon, dill potato salad, fruit salad and warmed mini-quiches, for example.

Really good bagels, lox, and all the fixins.

Mashed potato bar!! Hot mashed potato in plastic martini glasses. Have a "bar" of onions, bacon bits, cheese, shrimp, steak, chicken, salsa.....anything and EVERYTHING that can go with mashed potatoes. Also do some fruit and veggie plates and some sweet, brunchy things. I've seen the potato bar thing done a few times and people love it.

i'm a caterer (IANYC hehe) and my suggestion is to look for one that has the type and style of food you would like. they can then make suggestions for you. i get requests all the time for things that are not on our menus, so i do some research and come up with items that we can produce considering any limitations (eg. no cooking on premises - which, as an off premise caterer, we expect that 90% of the time anyway so no worries there). the caterer will know best what they can produce in that setting. however, some of my fave brunchy dishes would be things like bacon-wrapped egg cups, frittata & strata, savory cheesecakes, savory pastries (doughnuts & shortbreads), smoked fish & smoked fish mousse, terrines (fruity or savory). also, "bars" are still pretty popular. like mentioned above, waffle, french toast or omelette bars are all big hits usually.

WAFFLE BAR!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Here are some of the things I'd suggest: roasted vegetables, cold smoked salmon with capers, maybe other smoked fish, all sorts of delicious cold and warm salads (cucumber and tomato, caprese, caesar, spring greens, green beans with onions - ask your caterer for their standouts), roast beef or prime rib, some sort of sweet cooked eggy bread (french toast or bread pudding), a cheese tray and rolls. You probably should have some kind of eggs and some kind of potatoes, because people will be looking for them, but ask your caterer what they think they can do well (and then do your own research to verify how well people think that's turned out at buffets in the past).

Peel n'eat shrimp with a good cocktail sauce. Oysters on the half shell. Sliced melons. Sweet muffins (chocolate chip, poppy seed, banana) Cinnamon rolls.

Mini quiches. Waffles. Nice fruit, granola, yogurt, honey, nuts. Baked french toast. Banana bread. Some kind of potato hash. A baked bread and cheese dish. Good breakfast sausages. Freshly squeezed juices.