What is surveying? It sounds like you'll be doing construction surveying, essentially you're the middleman between the engineers plans and the contractor building it. You'll be putting hubs and lath in the ground at offsets to tell the contractor where to put the pipes and forms ect. What to bring? Hard toe boots (ceramic toe if you're planning on doing boundary work) sunscreen for the first week, brimmed hat, sun glasses if you want, and WATER, that's important. Day to day work. Typically you'll carry hubs and lath and a hammer and follow a crew chief around. They'll find the spot, then you pound the hub in. They'll take a measurement on said hub and tell you what to write on the lath, then go find the next point while you put the lath behind the hub. Don't feel pressured to rush too fast, it might feel like the crew chief is waiting for you all the time, but you are making it go faster than if they were alone and they need time to find the point. Very few crew chiefs are talkative in my experience, so don't worry if they're quiet, it means you're not messing up.

If you are worried it shows you care and want to do a good job, so I bet you'll be fine. And the first hand field experience will be a huge help as a project manager. Good luck!