instruction:
Given a travel related situation, and given a specific question about the situation, summarize the question into a title
question:
Between Playa Del Carmen and Tulum, a "Colectivo" service runs up and down the main highway. These are vehicles you can flag down and pay a small fee to drop you off at some later point along the road.

I'm interested in using a Colective service to get to the Xel'ha lagoon/theme park. My question is how well does this work - our experience so far has been that some attractions are right off the highway, making colectivo ideal. Some are off the highway but with a transport service (like Xcaret theme park) and some are a considerable walk off the highway, which normally wouldn't be an issue - but is proving one in August heat and humidity to those accustomed to northerly climates.

So the question is how well does using the colectivo work for visitng this attraction - especially as Xel'ha appears to be located at/off a major road junction.

answer:
How practical is it to take a Collectivo to Xel'Ha park?

question:
On a flight with Air Transat, passengers were informed that for use in the in-flight entertainment system, only earbud style earphones were permitted.

I ignored this and used my on-ear style earphones (I hate earbud style earphones), and the cabin crew did not tell me to take them off. I could still clearly hear announcements, and in any case, those announcements could be transmitted through the audio of the in-flight entertainment system, so being unable to hear important ambient sounds does not seem a reasonable motivation.

Why would only earbud style earphones be permitted? Is this rule common and commonly enforced?

answer:
Why only earbud style earphones?

question:
I have a 75 hour trip to Beijing (PEK) coming up in October. I shall enter at PEK on a flight from London, arriving at 0930 and continue onwards by air to Hong Kong three days later at 1230, and I shall be travelling on an ordinary British passport.

I understand that the 72 hour transit visa on arrival actually begins the midnight after my arrival (and not immediately after arrival). The relevant text from TIMATIC is
Visa required, except for Holders of British passports
endorsed British Citizen holding confirmed onward airline
tickets to a third country, if arriving in and departing from
the same city:
- at Beijing (PEK), Chengdu (CTU), Chongqing (CKG), Dalian
(DLC), Guangzhou (CAN), Hangzhou (HGH), Shanghai Hongqiao
(SHA), Shanghai Pudong (PVG), Tianjin (TSN), Wuhan (WUH),
Xi'an (XIY) or Xiamen (XMN) for a max. transit time of 72
hours, starting from 00:01 on the day following the day of
entry.
- at Guilin (KWL), Harbin (HRB), Kunming (KMG) or Shenyang
(SHE) for a max. transit time of 72 hours;

However, although several non-official sources substantiate this distinction, I cannot find any official confirmation of this. Does anyone have any experience in doing this kind of transit?

answer:
Chinese 72 hour transit visa rule: exact start time of period