Expect a shitty interrupted sleep – unfamiliar bed and environment, probably not totally quiet or totally dark, nurse may need to wake you to reattach sensors that have fallen off, etc. It’s not necessary to sleep straight through to get good results though; wish I knew beforehand.

Expect to be grumpy and tired the day after, and travel home with gross electrode gel in your hair.

I’d probably bring my own pillow(s) next time.