We were at WDW last week and saw no bugs at all and received no bites (family of 8) with one exception:
One night we went to the pool at the Contemporary around 9pm and it was dark and there were zillions of mosquitoes everywhere. But no one seemed bothered by them so I asked the lifeguard and he said (very seriously) that they were NON-BITING mosquitoes. I am totally allergic to mosquito bites and didn't believe him, but sat there for an hour or more (not in the pool, at a table) and did not receive any bites at all!!!!! Of course, this was in June, so it may be different in August.
JULIE