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

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.

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

A few days ago I wanted to buy Pegasus airline tickets because it was offering a 50% reduction on normal fares. I wanted a few tickets but couldn't even buy a single one. I tried different places with different networks but none worked. I even called my sister in New York to buy tickets for me and the result was again ineffective.

This is not the first time I encountered this problem. I have faced similar issues with other budget airlines as well (Ryanair, AirAsia). All the time during the sale, the website page was unresponsive. Well I do understand it all happens because of airline biggest sale promotion. I have bought promotion tickets "buy 1 get 1" and "Up to 25% off" before, but never been able to buy anything from the biggest sales.

Is there any possibility or hack to buy an airline ticket in one of these sales?

How to buy low cost airline tickets while airlines are offering big reductions

What's the cheapest way to get to Amherst, MA from either BDL or BOS airport? All shuttles from BDL to Amherst are around $55, which is the same price as that of Lyft. Peter Pan from Boston costs $45+5 but takes way more time. Are there any other options? Renting a car is not an option. I will be traveling alone and will not have any luggage. If flying to BDL, it is likely that I will arrive around 3 PM.
Cheapest way to get to Amherst, MA from BDL or BOS