best of luck to ya bud, i got married at 23, dated from my junior year in college lived together the month after we got together, it was great. dont worry about the wedding man as long as you dont make a big deal of it, i was nervous right before a shot of jack and a few smokes i was calm enough to stand up atleast.
then the ceremony is now a blur and the party afterwards flew by, you will spend so much time worrying about what could go wrong and you will never notice the things you are fretting over. just enjoy it and relax.
oh and start your secret squirrel cash stash now.