When Bill was intl at TWA he did 3 day European trips out of JFK. He'd call a bit before he left, and say 'hey', but then he'd be out of contact while actually
on his trip. Really, no big deal. I can go 36 hours without talking to him, it's really not that long
! He'd call when he hit JFK again, and before he'd catch his commuter flight back to ORD.
As for crash pads, if you want to be able to stay there with him now and then,
make sure he asks about that before signing up! A lot of crash pads are pretty much against 'guests', because that can lead to people bringing in other commuters, "just for the night", because they got stuck or whatnot. The people who pay to stay there sometimes get ticked off at people staying there who aren't paying too. My crash pad in Kew Gardens was 100% "no guest" policy, no spouses, no kids, no friends and
especially no other commuters. If you wanted your spouse in NY with you, you got a hotel room. Plus, it's a crash pad, it's not that nice, and it's probably only got twin beds. You'll get a much better night's sleep if you just go to a hotel that has a airport shuttle. It's worth the extra $.