Nat and Scott1

Hi my name is Nat, I thought I'd eventually introduce myself. I get married on the 7th July at akumal beach. I've been so grateful for this forum and you've all been a great help )) I have one question (but I'm sure I'll have more) we are having a legal ceremony and I'm unsure what legal documents I need? I'm from the UK do I need to take a translated birth certificate? Any help would be appreciated:)) Thanks Natx