I find a lot of people in IT and adjacent areas picked up a lot of their vocab by reading, without any guidance on pronunciation. I tend to let them get to 3 goes before correcting them.
0 - in Protocol Independent Multicast Sparse-mode routing, an RP is the root of the shared tree of participants for a given multicast group. See RFC 2362.
1 - for an English speaker, anyway. I imagine a native French speaker could pick apart the way we pronounce rendezvous.