The fact of the matter is that a visa is strictly a request to enter. Statistics show that 2% of valid visa holders are rejected from entry because of inconsistent testimony. In which case, I mean, the best move to take is to treat the booth like a witness stand. Fact is, misrepresentations are what the officer is looking for. The specifics is where trouble lurks due to no paper trail when the balance is $5000 causing secondary search. To be fair, you should carry a 10-page packet of every reservation, as it is the only way to prove that you have no intention of overstaying. As it happens, the same goes for having a contact for every night. Actually, according to one study, 15% of secondary inspections require digital devices to be reviewed. All that to say, the border experience is rewarding of total silence. That being said, I would say that the goal is to be the least interesting person. Preparation is the one defense against border unpredictability. Good documentation ensures a smooth journey.