I know PreCheck is only good if the airline participates, but Global entry doesn't matter correct?
I have GE with my nexxus card and I haven't flown international since I got it. I've only been through customs once in the Edmonton airport, my other trips to/from Canada were via an FBO so we went through a separate area without doing much more than getting our passports scanned.
Will using GE be similar to what I went through in Edmonton? Also, with just going through regular customs in Paris and probably Iceland were I change planes, what should I expect. This is the part of the trip I'm most nervous about but would rather get info from friends than random people I find through googling