LOL. I can relate. Especially, since they'll be handling your food, it pays to be nice. I tend to be not very chatty, because its just not generally in my nature, but if something is wrong, I'll try to let them know in a good way. For instance, was out last night, and the place had the weakest tea I've seen in ages. I had to ask if they had any tea with tea in it. :-)
I don’t think it’s necessary to be chatty. A lot of waiters are leery of chatty folks because they suspect they’re going to get stiffed on the tip! I always make sure after a chatty conversation to tip well. I just think being nice to servers is important. But if something is amiss with the meal, definitely speak up. And if the service is lousy, complain!