I am surprised that your boyfriend doesn't seem too concerned about the two of you not having more time alone during your vacations. I'm like you. I would have been hoping and even assuming that my boyfriend would be glad to have more time together, finally.

I would be tempted to try to see why he is not concerned. Is another chance coming up soon? Is he looking at things from a long-term perspective? Does this relationship not mean as much to him? I know it will be hard, but I suggest you talk to him about it as calmly and matter-of-factly as you can.