Can I get in advance a list of those traveling with me on my trip?

Sorry but that is not feasible to do so. For obvious confidential and security reasons such a list is not provided prior to travel. However as you travel with what could be brothers and sisters from around the world you are certainly welcome to get their contact information so you can communicate with him in the future and continue to share the wonderful experiences you had during the trip with your new BCT Bethel Trip family.