I always did my S3 exchanges with MIL at a place that had cameras (usually a grocery store parking lot) and i would park right underneath it.
I also had my phone on "Voice Record" mode. Although recording without consent is inadmissible in my state, i think because i was recording around my son, which I DO have the right to do, i think I would be ok.
M: 35, EX-W: 3, S:4 All Divorce Proceedings Complete - Oct 18 ----------------------------------------------------- 2nd EX - Was Engaged - Diagnosed BPD 2 Major breakups. 2 Rebounds