my watch doesn't wake up with wrist motion -- I just got off apple support and all updates are installed. Anyone know what's wrong?

Try restarting your apl. Press and hold the side button and Digital Crown. Keep pressing until you see the Apple logo then let the watch restart. Make sure Wake Screen on Wrist Raise and Crown Up in WatchOS 6 is turned on.

Apple Watch App > General > Wake Screen > Turn on Wake Screen on Wrist Raise

Apple Watch App > General > Wake Screen > Turn on Wake Screen on Crown Up

Still no joy? Then contact Apple support again.

It's not in Cinema mode is it? Swipe up from a watch face and check...