Having a lagoon view will still not guarantee you a view of Wishes. Some of the buildings are angled the other way and would offer views of Epcot in the distance. Personally, I think the garden views are lovely. You could always keep that choice, but put in a request for SagoCay marina (still considered garden) or a corner room (slightly bigger, usually 2 balconies). You might be able to look to your left from a balcony in SagoCay and see the fireworks, otherwise, just step outside the building for a nice view.