Don't know if maybe you just left this bit of information out but...you might want to take some potty pads along with you for potty breaks indoors.Also, if you have any lay overs find the first "family" restroom and let your puppy out on the floor for a potty break. Watch out for mothers with babies in strollers going thru the terminal however. You will get a dirty look if you go into the room before them carrying only what looks to be a carry on bag. I got jumped pretty good in St. Louis walking into one right in front of a mother. I got it with both barrels, she was not happy with me.