The iconic Jaki Baskow (Baskow & Associates, Las Vegas, www.baskow.com) suggested this one (in a kind of stream of consciousness way)… Everything is backwards, nothing matches, all place settings are different sizes (plates, cups, glassware, utensils, flower arrangements, watering cans), lots of stripes, polka dots and/or eyes. Tables are long Mad Tea Party settings covered with all kinds of crazy stuff.
Lots of entertainers, in character. Jaki says that even the strolling magician does his tricks backwards (I guess I have to see that one). Servers dressed like Playing Cards. Guests enter through a Rabbit Hole or Looking Glass and can participate in games like Flamingo Croquet (Styrofoam flamingoes – they don’t talk back). The Mad Queen is there. The Cheshire Cat, of course. Have a professional in-character MC… Music and dancing… and if you can… send invitations (from the Queen) to guests before the event… and do that costume contest thing. For those who don’t come in costume, have some accessories available. I guess if you have outdoor access and can get far enough away from the door, you can have a hookah-sharing Caterpillar for the smokers in the group… OK, maybe that went a bit too far… play with it.