Do I have a right to ask to go on vacation too?

Okay so here is issue #1:
My boyfriend and I have left over credit from an airline we must use by the end of the year. We planned on going to California and I really looked forward to it. Then last night he told me “I’m going to Massachusetts” I asked “will you have enough for California??” He replied “I don’t know” and I told him its unfair to put our plans on the back burner like that. Our credit will expire and his trip to mass is the same as our Credit expiration. We can’t really change our schedules for that due to his work. Even though its credit we still spend a pretty big fee to use it.

He’s going to Mass with his cousin to visit her uncle and aunt because he hasn’t seem them in a few years. He considers them his aunt and uncle too.

Issue #2 I do not know if I’m invited because he said “I’m going” which implied just him and not me. I want to go cuz I hear them talk so much about Mass I feel left out and not understand the stories or inside jokes, etc. I just want to see a part of his childhood. his cousin put a Facebook status tagging me about going on vacation and then the two of them talked about Mass so I don’t know if that means I’m invited. I assume the two will stay in their home but it’s pretty small.

I’m just not happy that our trip might be cancelled and also that I’m not invited to this place. They talk about it like to the best place ever and I just want to meet the people they talk about so much.