[QUOTE=sdix;30019984]Generally I don't tell them at booking so check in is fine then at the airport simply let them know and they will reissue your BP.

YMMV but sometimes I do it at the gate. I don't think technically we should get past TSA without some notation on BP but using Clear it has never been an issue.

Seats could be a problem. If you chose seats that don't have 3 oxygen masks, you will be moved or separated.