L.N.
Hi J.~
Sounds like your little guy is looking for a reaction. He is at the age where he is learning that he has an identity and can think for himself. Now it's your turn to teach him how to make the right choices. What worked for us was to get down on his level, look in his eyes, grab his hand and give it a squeeze (not hard, but enough to make him look) and give him a firm 'no'. Then turn away from him and go back to what you were doing so he doesn't see your continued interest as a 'dare' to do it again. Once he has stopped the behavior, then praise and cuddle him to reward the good behavior choice. We only used 'no' for behavior that MUST change, not for everyday things that I didn't want him to play with...for that we just redirected his attention. This worked like a charm. It only took a couple of times before he understood that the praise was WAY better than the discipline. Our son is 3 now and when we say 'no' he still knows that we are serious, and he knows how to correct his behavior and to ask nicely to get what he wants. It was a small step that has reaped great rewards! Good luck!
Congrats on the wedding...try to relax. When it's all said and done, the little things won't matter!!
~L.