Am I being selfish???

[adpialumcsuc]

Ok so my parents are both retiring this year after 39 years of teaching in the public schools in my home town. I am very close to my family and always have been.
Since this is their last year it is also the last time that they will be doing a lot the things that they have done for 39 years. Parades, (my dad is a band teacher), concerts, field trips etc.
As a band teacher my dad has been involved in many different events over the years and for the past 12 years my dad has been taking his band to Disneyland to march from Small World to the entrance of the park. This was something my dad had always dreamed of doing and the first year he did it he was so excited that he actually uniformed up and march with all the kids. (While my mom and I watched and cried)
Anyways his band was accepted again this year and he will be going at the end of March. My husband has been aware of this and has been saying from the get go that he really wants to be there and has gone as far to make arrangements for us to see his family while we are down there. WELL...there is the possibility that he will be getting a new job and he is hesitant to want to ask for the time off to go since he won't have been the company very long. I understand what he is saying but it means the world to me and my family that he is there.
Am I being selfish and need to let it go or should I continue to push the issue?