I also agree with Petals. Jamaican time is not like US/Canadian time. Things move slower and people are sooo much more layed back. Take a deep breath, smile and remember you're in paradise ~
Do some tours with your hotel (YS Falls is a great alternative to Dunn's River), Blue Mountain mountain bike tour and zip lining is SO much fun, Sunset dinner at Ricks Cafe is a must, Rafting at Marth Brae (sp), Bob Marley Museum and Chukka Tours has a Safari that I've heard is great (I haven't done it personally though). I don't suggest you go off on your own. Its not a matter of danger but in any country if someone feels they can rip you off...they will. At least with the hotel tours (or approved tour providers) you know what you’re paying for and you won't get a special 300% mark up tourist price!
I also suggest being open to tying some of the local food (not just the Jerk).
Have you decided which resort you’re marrying at?
Jamaica is an amazing place...enjoy!