Hey Warge
It's good you dont have too long to wait. And being emotional is completely natural. I had a complete wobbly in the reception area waiting to go in for the anaesthesia. I couldn't stop crying and thought I might chicken out. They were all very sympathetic and calmed me down. If it gets really bad you can ask for a pre-med, though they prefer not to give one these days.
Tips:
1) Nighties are better than PJs for after the op, or just wear the gowns they can give you. And take slippers with a good grip on the bottom of them
2) Getting up and moving around after the op will help get rid of the wind you get from them pumping up your stomach. Also helps to wake your bowel up
3) Take a notebook and pen and write down any questions you want to ask the docs when they come round. I'd have them in my head, then forget to ask them
Easier said than done, but try not to worry too much. I am doing really well post op and feeling better than I have done in ages.