Given a travel related situation, and given a specific question about the situation, summarize the question into a title

Example Input: I live in Canada with a German passport and a student visa. From a recent climbing trip to the US I still have this green I94-W form in my passport. I didn't surrender it on leaving the US back to Canada, because I expected to come back for another climbing trip relatively soon.

That trip got postponed a few times, and now the situation is that the I94-W would expire while I'm on the trip. That is, it would still be valid on entry, but not on exit.

Can I apply for a new I94-W at the border crossing, or can these Visa waivers not be extended back-to-back?

Example Output: Extending an expiring I-94W, land based entry to US

Example Input: In the AAdvantage program, there are 3 statuses, Gold, Platinum and Platinum Executive. The Platinum has a "72-hour upgrade window". The Executive has a 100-hour window. I assume this refers to when you can sign up for an upgrade and essentially get in line for an unsold first class seat.

Do all these seats invariably go to Executive members, or do Platinum members have a chance at them? In other words, what I am thinking is that if there are dozens of Platinum members on a flight in economy and they all sign up for an upgrade, then there might a long list of Executive members in the line for just a handful of first class seats. But if there are not so many Executive members, then maybe Platinum members would have a shot at those seats.

What is the common experience?

Example Output: Probability of first-class upgrade with only Platinum status?

Example Input: I will be landing in Victoria Falls and starting a truck tour which goes through Zambia and back into Zimbabwe. When I called the Zimbabwe embassy in London, they said that I will need to get two single entry visas at the border ($50 each). They didn't want to give me any info on multiple entry visas. Is it possible to get one at the port of entry?

Example Output:
Can a New Zealander get a multi entry visa for Zimbabwe on arival?