Hi Theresa,
For a little while, I chose not to spend time with my family - they didn't understand why I chose not to drink, and it wasn't safe to be around them. If you can get to each of these occasions on your own, not having to rely on someone else to get you there and pick you up, then why not go for an hour, then leave? If this isn't possible, I would sit these two occasions out. Eventually, you'll be able to spend time with them again. I hope this helps.
Rowan