It sounds like your church has some nice children's programming going on there, and Munchkins and juice to boot!  

I'm going to go out on a limb here, but I think the fact that your husband doesn't go with you might be a large part of the difficulty you are having too. Your son may want to stay home with his dad? Or wonder why he has to go if Dad doesn't have to? No matter what the faith community, if the whole family isn't going, I think the whole journey becomes much, much harder for the parent trying to make it work.