Odds of Hanging On
Look, this isn't rocket science (although it may be the history of rocket science). As long as you're knowledgeable and good with people, and you don't insult your tour groups too much, you should be all right. Oh, and you better hope the tourism industry is alive and well—that seems like a fairly important thing, too. If no one leaves their house, you're not going to be booking a whole lot of groups.