By the looks of that flightline it looks like many will be short changed for an airshow:D Cessna 1 thingy an a Rapide. Little small i feel 😉 I suggest waiting and seeing you maybe pleasantly surprised.
The Wheatsheaf (heathen!) seems to be nicer but atmosphere goes to the Whittlesford Red Lion simply because it has Forum History in it. I cant imagine Drinking anywhere else with forumites at Duxford.