instruction:
Given a travel related situation, and given a specific question about the situation, summarize the question into a title
question:
Came across a YouTube video from July 2008, where a Russian border official on a night train from Ukraine checks a big logbook before stamping the passenger's passport.

What is the purpose of this, and is it still common practice?

answer:
What does Russian border control use big logbooks for?

question:
My wife and I are going to Las Vegas on a business trip for 5 days. While we're there, we want to be able to keep in touch with mobile phones, and I'd like to spend about $10-20 per phone (including prepaid credit).

This is possible in the UK, where one can buy a Pay As You Go phone for less than 5 and a SIM Card with 10 credit on it. Sometimes you can get them bundled together for 10. That's the kind of price range I'm looking at.

A while ago when I went to Wyoming, a friend advised me to buy a prepaid Tracfone, but that worked out to cost more than $50.

What's the trick to getting cheap temporary phones in the USA?

answer:
How can I buy a pair of cheap phones in the USA

question:
I'm planning to visit a few places in Egypt during the month of January or February. The locations on my itinerary are:

Cairo
Alexandria
Aswan
Abu Simbel
Luxor

I plan to spend anywhere from 1 to 2 days at those locations. Is it culturally acceptable for a male to wear shorts, tshirts and flip flops? What's the temperature like at this time of the year? Will I need a sweater? Are hiking boots required or just the general walking shoes? My tour will not include hiking for more than 1 hour.

answer:
What kind of clothes and footwear are ideal to visit Egypt?