I went to a wedding last weekend and didn't even notice that the bride and groom didn't have favors.  So, if it's not in your budget or you just don't want to have them, I don't think anyone will even notice.
Just my two cents.
                Ignorance is a poor defense.
 
Re: Not sure if you want to have favors?
If you do pick a favor, try not going with the propoganda ones that are out there. There are definitely websites that try to push this favor stuff on you. If it's not you, or you want to save money, then don't have it
"The best and most beautiful things in the world cannot be seen or even touched, they must be felt with the heart." ~ Miss K ~