Wedding Balloons

Since I bought my first wedding magazine (I mean, the first one after we were actually engaged, teehee) I've been in love with wedding balloons. Not sure what I'm talking about? Let me show you:






The problem I have is that because our ceremony and reception are indoors I'm not sure of the best ways to incorporate wedding balloons into our day. I like the idea of a wedding sign out front of our ceremony & reception sites with giant white balloons tied to them (or maybe soft pale pink balloons...) I'm also a little concerned that balloons will clash with the overall feel that we're going for. Everything is very classic and sophisticated and suddenly we have balloons - not so classic or sophisticated. A friend of mine suggested that we use balloons during our farewell and everyone would hold a big white balloon as we're dashing away from the party.

What do you think about wedding balloons? Was there an element of your wedding that you knew you wanted to incorporate but not sure how to go about it?