Really, any use of "met you" to mean anything but a first encounter sounds odd these days to me. The addition of a repetition like "last last" is infelicitous, as well.Technically it is grammatically correct, but the way it is worded sounds weird because the two "lasts" are so close together. Personally, I prefer my example above, but that's just me. Maybe someone else has a different opinion.
I agree. "Since we're taking separate cars, I'll meet you at the entrance to the park and give you your ticket there." This doesn't imply to me that it's a first meeting at all.It does not sound at all odd to me to use "meet" to mean "encounter someone, and not just for the first time". I would think it perfectly natural to say:
I met my mother in front of the drugstore.