Good luck Alphaghetti! I, too, am pretty socially awkward. Making small talk, even for a brief period of time is soo hard for me. I never know what to say, and it comes out all weird, and it makes me even more nervous! Mix that with someone who has been rude in the past and I don't care for, would be unbearable.
I agree with mimi, to just focus on the kids and the daycare. It's safe ground. I hate doing playdates with potential parents for this reason. Hope the hour goes by quickly for you.