Thanks everyone for the clothing advice.  Another question.  Dancing?  I have no problem in knowing how to dance.  I am one of the lucky few that, my Dad brought me up as his son (until puberty anyway.)  So, I know the basic ballroom....male moves.  My problem is.....being an ex professional drummer, I think I might shake my groove thing a little too much.  From what I know, most guys don't have that kind of rhythm, or move so much.  Opinions? 

Follow the lead of the rest of the party when the dancing starts and stay conscious on who is the wild one dancing and try and remain a little more conservative that him (mostly men or really trashy women  are the ones who have had to much and are making a fool of themselves). However younger weddings get wild and it is totally acceptable to let loose and dance up a storm if everyone is out dancing and cutting up!

Hell if you got it, flaunt it.  Just tell 'em you copped the moves from James Brown.