Yes. In a heartbeat. I would love to have a benefactor. There’s a chance this goes the other way — the wealthy couple and I become great friends and I now have a place to stay in Australia. Also, I’m not Emily Post or anything, but it seems a person’s obligation to this couple would only extend to scholarly pursuits. The waitress might, for example, let them know when she graduates or goes on to get another degree, gets a job in her field, etc.