I know this is impossible but oh well:
I would have the ceremony in the towers chapel then go on Nemesis loads and let everyone go around the park, or I would get married on Nemesis. I would have the reception in the conference room after everyone has been around the park all day and there would be lots of pizza, cheese and lemon drizzle cake (posh food is just no). Also, there would be dance music at the reception e.g. Calvin Harris, Avicii, Swedish House Mafia etc. and I would stay in a themed room (maybe The Smiler room).