Can I add vodka to my tomato juice and can it together to make bloody marys later?

If yo freeze it that is fine you never said how you were going to preserve it I often make fresh fruit margaritas and freeze them without adding the ice and they have been fine for months add ice when you are ready to serve

I think most, but not all, of the alcohol will be forced out of the mixture during processing. So you would end up adding more alcohol later, which is a such a waste. Then there's the safety part that I'm not all that comfortable: alcohol vapors, pressurized by heat, in a somewhat closed glass vessel. If anything, it could possibly make one big mess.