If you need the job (and it's said that it's easier to get a new job if you're employed than if you're not), don't ask about travel in the interview. You need to present your very best self, make sure they know what you can offer them. If you get an offer, then you can ask more questions, but even then, I'd be wary of being seen as too picky. You may just need to suck it up for a year or so. Of course, I'm retired now, so I no longer have to please anyone but myself.