Flamingo has one of the best wedding venues, especially if you go in nice weather. It has been at least 5 years since I was there but their "back yard" is lovely, two wedding chapels--an 'inside' type chapel and one that is more open to the elements, though both are "outside" in the back of the property. They used to have live flamingos walking around but not sure they are still there.
Flamingo developed a reputation as a place for old folks, but that isn't necessarily so. There is a new steakhouse which I can't think of the name right now but I believe "Bugsy" is in the name. There was a good review of it here recently. Plus the location of the property is ideal. Try their web site, see if they have pictures. Sign up on the web site, if that's possible, since you've never been there. Might benefit you in some way when you go to make reservations.
I never stayed at Flamingo, so can't give an accounting of the rooms or suites. Try the web site, see if they have pictures. As for suites, I've found that (elsewhere) for just the two of us we don't need a gargantuan suite, but that's your business, and once in a lifetime will be remembered. Maybe just having a high floor and a great Strip view would be enough if price of suites is crazy. Talk to someone there about what they have available. Remember, happy wife, happy life. Good luck.
Candy