They don't tell you this - be prepared to pay for a bottle service at every place you go. If you want to sit anywhere but the bus you'll have to pay. The bus only serves champagne, not top shelf liqueurs. You don't have to wear heels, flats are fine, the host doesn't care at all if you are there and he will tell you, they will leave an hour later than their own itinerary says in the website, if you still plan on partying with then be prepared to lay down a grand for all your happenings, don't expect the host to do anything to mingle the group, they don't care.