Barbo, I told the WC my package at the beginning and approx number of guest. I have since changed my package. I think it's okay to change pretty much everything up until you get there. I think they e-mail you about a month in advance with more specific questions. If you have special requests, such as music or location, etc. It helps to let them know asap so you can reserve your spots. I hear they do up to 6 weddings per day at all the different resorts, so pick your spot early!