Outdoor Weddings

I was hoping that someone could help me out with outdoor wedding details. We have a gazebo and pavillion, so shelter from rain is taken care of. However, I`m really nervous about bugs. Since it is an evening wedding, we are going to use citronella candles for lighting, but will they really keep the mosquitoes away?? And where can I get them in bulk prices? An outdoor candlelit wedding is my dream, but everyone keeps trying to talk me out of it because of all the problems associated w/ outdoor events. Anyone who has done this before.........Any pointers (anything at all) or advice is much appreciated.
Thanks!!