I recall my S's birthday in 2014 ... same thing. W just had to put up the big show .... ironically also made sure that I was taking S and all his gifts afterwards because OM and her had plans. Was tough not to say F it and skip that party ... but like you said. Its about S ..... focus on that, sure all that surrounds the Bday might be tough for you ... but its his special day, constantly remind yourself of that till Saturday, make it about him ... we often as parents must sacrifice for our kids, this is one of those times. PMA...Fake it if you must but think about him and not so much about her.
