Am I really likely to be able to find availability for three?
Also, dukerau, how did you find the MAD route above? I have search routes on Kayak and AA and didn't see anything other than through via ORD or PHL (and one Paris routing using AB).
I'm thinking I should search directly on AB for starters?

Had no idea we could change routing later. Do you do that with a phone call?

Our flight dates are barely even showing up as available for booking yet (end of May) so we definitely are on the early end of things.

Thank for helping think this through.