Welcome to the forums Leanne. We have several topics currently running here on page 1 of the forum, which may contain some of the info you are looking for. Here are just a few which may be worth having a browse through, but please do feel free to post any specific questions in those topics if you don't find all the info you are looking for:

How much spending money ?
Bars, Clubs & Restaurants
Tickets for theme parks

We also have a separate topic about the Hotel Marina, which includes a link to our reviews page for that hotel. You say that you are self catering, but I personally wasn't aware of rooms at that hotel having kitchen/cooking facilities which would allow that option.

David