The paperwork is not too complicated,especially if you have a planner who've dealt with Cuban weddings. They can really help you with a lot of stuff and make the whole process much easier.
Symbolic ceremonies are very popular though,especially with Cuba. If you are on a budget and don't want to hire an outside help or don't have time to do all the paperwork then symbolic ceremony is the answer. Both ceremonies are absolutely the same and unless you tell you guests, they'd never know.