Having a wide range of interests, I'd be hard pressed to stick to one theme. Since money is no object, I won't.
On a beautiful private island (260 acres in size), with only 8 roads upon it, thousands of maple and chestnut trees and two dozen buildings, guests would be given an option.
1)A rather sedate affair in an elegant mansion where food would be served at tables, each seating 8 persons. A full orchestra would play classical music throughout and the finest wines would be served. Good aged whiskey as well. After a pleasant meal, the guests would be treated to an option of either dancing to the dance music played by a new and fresh orchestra or retiring to one of the several libraries, where deep discussions would be held-on literature, medicine, politics, religion or any of a number of other topics. Throughout it all, servers would float through with trays of edibles and taking orders for beverage refills. Fine drapes of the richest fabrics would hang on the windows, double stuffed sofas and easy chairs, a full service bar-complete with Guiness on tap, drawn by talented servers.
2)A much more lively and upbeat gathering would feature live bands and singers (who sound eerily exactly the way they did in the 70s). Beer kegs would be situated throughout a much more down to earth style house, as well as whiskey and screwcap wine and, since nothing screams 'sleaze' quite so loud, champagne with plastic corks! Dancing, sometimes close, sometimes far apart, would last on late into the evening (and the next morning) Guests, would mostly sit upon cushions strewn about, although the less limber, would be able to use one of the several sofas. A few would undoubtedly be passed out. Conversation would be minimal at best. Scantily clad male and female servers would go through on a regular basis taking any beverage or snack orders. The main food table would be a serve yourself buffet complete with plastic utensils. There would be the required dips and chips and cold cuts galore along with servers who would put together the best pastrami sandwich anywhere. Burgers could be ordered special from the kitchen-cooked to order. Any food wanted, as long as it had at some point been listed by the AMA or the FDA as detrimental to ones health, could be had. (The kitchen and pantry would both be overstocked with all manner of food and beverage) With the excessive amounts of alcohol and various narcotics which the guests would be ingesting, there's no telling how the evening could progress; but, there would be several rooms set aside for either private encounterings or for those so inclined, some orgy parlors. (protections would be supplied for free)
Everyone would overeat, get off their tits drunk on wine and mead, then there'd be dancing - medieval dancing of course 
