Re: Play Date Issues.
If you're in the metro there are TONS of things to do in doors. I would just email the mom and say you're new to the area and haven't settled in yet, but once you do you'd like to get to know the boy and her (the mom) better and could schedule a few play dates at an indoor place. While I can totally understand your hesitation, your child does also need to make friends, and there is middle ground, having playdates with you there.
Happily Married Momma to my two Bambinos & Bambina
Raising Italy in America