stay strong da10. Rant on here, but dont call the hotel. If hes there, you will just get angry and it might effect the evenings plans, if hes not there, you just try to figure out where he is.
do something for yourself. have a hot bath if you can. or just wait till he gets there hand him the baby and say bye. lock yourself in your room fir the night or better yet go to a friends. if he says something about it, just say you need to rest and it will be easier elsewhere.
just remember to focus on you and what you can do, not what he can or is doing.