Carrying Trays
I used to be pretty afraid of trays - and still don't like using them for serving drinks.... I know not correct, not fancy, whatever.
For food, I'll share this. 1) they really do make good sense if restaurant has space for it. 2) Don't be afraid.
When I started at this restaurant where trays were super necessary, I had anxiety that'd I'd drop 4 massive plates of food, the whole restaurant would laugh at me, the kitchen would hate me...
Then one day I envisioned all that happening and decided it'd be fine. It'd be an issue, then it wouldn't and life would go on.