Since you can't really know if you're the sort of pg woman to go early/late or to have complications, it's hard to make predictions. How far away would he be travelling? At 32/33 wks., how quickly could he get back if he needed to? That would likely determine my comfort level, although keep in mind that if you give birth that early, babe will be in NICU several weeks AND hopefully you'd have enough notice that things weren't going well to get him back to you before the actual birth. Also, couldn't he say yes to the trip now and then back out later on if you develop complications that might signal a preterm birth? The fact is that MOST women aren't going to deliver that early, but a fair number DO deliver at 37 wks., so I think you made a judicious choice.
As for the wedding, I had planned to attend my brother's wedding (and 3 of my children were IN the wedding, aack!) when I would have been 33 wks. pg with Sophia. Unfortunately, by that time, my BP had started to give me serious trouble again (I've had PIH and/or preeclampsia in every.single.pg, fwiw) and although it was only in the next state over and a car ride instead of airplane (but a 14 hr. car ride), my MW and OB both nixxed it. So home we all stayed. And while disappointing, it turned out to be an excellent choice, b/c Sophie went into fetal distress at 35w and was born via emergency c/s (and with a bonus chromosome, to boot!)
Having had several preemies (my first two children were 33- and 31- wkrs. due to severe pre-e) and a few more earlyish full-termers (the longest I've ever been pg thus far is 37 weeks), I now know not to schedule anything from around 31 wks. on. But hey, I certainly didn't know that when pg for the first time -- as a result, my DS ended up being born BEFORE I had finished childbirth classes (had only gone to 3), BEFORE my baby shower, BEFORE lots of things, in fact. But even then, we knew weeks ahead of time that I was developing PE, and I was already on bedrest before my water unexpectedly broke with him one night and I went into labor. Moreover, I had a good 24 hrs. while they stopped labor and gave me steroids for his lungs, before I went back into labor on my own and had him another 8 hrs. later. IOW, plenty of time for DH to get back from most places, had he been out of town, yk?