Sunday attire (dressy). Like you're going to church :)
ABSOLUTELY!!
During the ceremony, no. During the Reception, absolutely go crazy!
That would be ideal. The RSVPs are very helpful to us so we can get a head count and get the correct amount of food and seats! If you do not RSVP you probably won't get a meal or a seat!
Your invitation is for you and 1 other person. Please do not show up with more people without talking to us in advance.