We live in the UK (Scotland) and took our little ones (both under 3) abroad from birth with up to 8 hour time differences.West Coast to Hawaii is a 3 hour time difference…. but it’s MUCH worse flying to FL and having it be 3 hours the other way!
The way we see it, we can be tired parents in Disney/Aulani, or we can be tired parents somewhere less fun, but either way if you take young kids on vacation, you're gonna be tired!