Hey! I'm actually from a NYC team. As for a practice field, I can say that no NYC team has a practice field(unless one of the teams is hiding all of this from us xD)...there are 42 of us, but we all have no space. Most of the NYC teams work outside of a classroom and not a shop. There is a contact list for all teams in NYC and I'll send out an email to make sure everyone checks out this thread for help in anyway. I wish 334 could help you, but NYC high schools are closed after this week for state tests and getting in for other than testing might be hard :/
Good luck on your filming!
Your team is really great, and if you need any help about NYC or anything else, PM me.