I'm not mad in the slightest that they didn't, that wasn't the intention of the post, I mentioned the experience level because it may be relevant for someone else Googling a similar question in the future. I was not successful, but others with RJ were. One contributing factor for mine was the staff were all relatively new - for one it was her very first day. They had put the wrong FF on my ticket. At the gate I told them and asked them to change it (with plenty of time before the flight). They said they couldn't and told me to change it in Amman... I figured with a 45 minute connection the counter staff at RJ in Amman would probably not have time - but nope, they took the time to change it to the correct number and all was well. I'm 95% certain the staff at Tel Aviv could have changed it but they didn't know how as, well, they were new.

Despite leaving 15 minutes late we arrived early and I had plenty of time to clear immigration, get my bag and then check back in - and had an extra hour in the lounge in Bangkok.