That's not selfish at all, and from the sounds of who you have coming with you, it's just not a workable option . . . but . . .
Volunteering is a great way to meet and hang out with people. Andre is working hard to make sure those who come can still do all that *and* volunteer (some of it *while* volunteering), and maybe next year you can lend a hand with us and see what fun/trouble we can get into with an orange shirt