(((( Rio_ ))))
I'm sure you can do this with a little preparation!
Find out where you can get a bus schedule from, and how much the trip will cost you. Plan Plan Plan. By looking at the schedule (and most times they run pretty regularly) you can plan your trip so that you are not late to your destination.
If you see someone you know, smile and say hello!
Plan Plan Plan

This will make you much less anxious and you will feel more in control of the situation when you have the information you need!
You can do this! I wish you a safe and happy journey.
Hugsssss
J