[mickelsen]

Yeah, I usually don't keep reservations for an entire trip either, just the first couple of days if it's a longer stint. And usually the border people in all the countries I've been -including the US- only care about that, that you will be at least staying at the first place you state. You can change your plans later, that's normal, but given the extra scrutiny now, I'd avoid anything that could give them the chance of prying further.