Congratulations on the new job! For me, an event like this makes me hypomanic, and I don't get the soaring high feeling. The lack of sleep leaves me feeling desperate and I sometimes make foolish decisions.
Like Tilly may, I ask my husband or good friend to keep an eye on me. I am not worried about doing something foolish in public. It is just that I get much louder and obnoxious without realizing it.
My advice is to talk to your pdoc in order to get meds to help you sleep, even if it is only temporary. Sleep is the key to feeling healthy and able to handle the new job.
Good luck!
Bluemountains