[InChiefsHeaven]

My son graduated from Marine Boot a year and a half ago. We flew out like a day before Family Day. He actually graduated the day before Thanksgiving, so travel was a pain. We didn't know his grad date until a few weeks before, because like you said, it's not definite, it depended on some crap that I can't remember now.

Good luck. You'll basically have to wait until you know the exact date, and then get your flights, or just go a couple of days early and hang out I guess.