GG maybe the positive reaction was due to the fact that you directly solicited his opinion. "Would that be ok?" is not the same as making plans and informing him.
I am definitely with BND - saying yes so your sister can save money, jeez that seems like the tail wagging the dog. We're talking about your marriage here. How much is that worth? if you could save your sister $400 on airfare every Christmas for the next 20, but tick off your husband in the process, would it be worth it?
Yes, $400 is $400, (or whatever the number was) but it's the principle of the thing. Domestic tranquility trumps any savings on an airfare.
I'm glad it worked out the way it did. But... there was a better way to think about it, seems like. a better way to approach it even from the beginning.
