With the caveat that I’m not a coach. You aren’t going to lose any or much IM related fitness IMO. you certainly don’t gain any fitness you didn’t have in those two weeks.

I’d run easy 3-4 x /week, get up early and get it done and then enjoy the vacation. If you find a place to swim get in for 20 minutes. Is it ideal? Probably not for a kona qualifier. If for a completer you’re good.

She’s gonna have a long day waiting around for your ass to do a stupid race (I’ve done a few and will again, they really are kinda stupid :) )