I wound up setting a 2 p.m. deadline at around 1:30, because T. was obviously flagging and J. was getting _really_ wound up and disorganized. I'm glad I did, because I hate to wait until things go bad to bail -- I'd rather call a halt when things are still going well, because that makes the next time actually happen, as opposed to everyone being all what happened? That was so good ... until it wasn't.
I'm also glad I did, because after spending 45 minutes or so with my walking partner (no walk -- it's cold and T. is sick), I realized that T. and I are really, really, really freaking exhausted. He's hanging out on the couch watching TV and I can barely sit up.
Socializing apparently really takes it out of us.