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

Input: Consider Input: As an example I've recently been to Paris and the level of credit card adoption there is so high I didn't once need to take out cash. I likewise assume many of the locals avoid cash altogether and only pay by card. 

But what's the etiquette in places where tips are common, like bars and restaurants? Are you supposed to keep cash just for the tips? Or is it up to the waiter/barman to offer you a tip option on the card terminal? I've tried asking the wait staff if I can leave a tip by card but they either misunderstood me or their POS terminal didn't have such a feature. 


Output: Are cash tips still expected in cities where nearly everything is cashless?


Input: Consider 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?


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


Input: Consider Input: I am going on holiday to India for 6 days and was wondering if anyone knew of any form of preventative medication which I would be able to acquire in order to try and stop some myself getting some of the local bugs.



Output: Tips on preventing illness whilst in India