Given the temperate climate here, our DQ will be open year round. They do have a drive up windows, and also walk in. They wiped out a Church's Fried Chicken that wasn't doing well and are revamping it into the DQ. They'll do killer business I'm sure.
I'll never forget back in 1962 or so in Batavia, NY while visting my Sister & Husband who had relocated there from Sarasota, people standing in line in the dead of Winter (with snow blowing) waiting for ice cream! It may have been a Dairy Queen but I don't recall. So, true ice cream lovers could care lerss about the temperature outside! Ha! Personally I like the Heath Blizzard! I'm not suppose to have ice cream but I cheat on occasion!