Why can't websites be more specific?

My brother is in town visiting for the week and I took yesterday off from work to spend time with him, his son and girlfriend before they have to leave this Saturday. They had an entire fun-filled day planned out involving a caving tour, and an indoor water park adventure. We left early in the morning because they wanted to get to the cave boat tour first thing so that we would have as much time as possible to play in the water park. We drove for about 45 minutes and arrived at the caving place right at 9am when they supposedly opened. Well, we were informed that the gift shop opens at 9am, but since it's the slow season, their first boat tour didn't go out until 10am. Okay fine, we took a walk and did some "gem mining" to pass the time and had a really fun experience on the boat tour when it did finally go out. (This only set us back from our schedule about an hour.)

The water part was about another 45 minutes from the caving place, so we headed back out and stopped to grab lunch before heading to the water park. When we pulled up to the water park it was enclosed in a giant glass building that looked like a huge greenhouse. We could see all the twirly slides and waterfalls etc. It looked like a lot of fun. We parked and went inside and spoke to an employee who informed us that it was also their slow season and they weren't going to be opening the water park until after 4pm. (It was about 1pm.) Unfortunately, we couldn't burn 3 hours waiting for the park to open because we had other plans to pick up my brother's other son once school got out which was back about an hour the way we had come, so... we had to leave and make alternate arrangements.

It sucks that the websites of both of these tourist-type places did not better advertise their off-season hours. Had we known the water park was not going to open until 4pm, we would have saved ourselves the hour and a half drive and planned differently altogether. Fortunately we all made the best of it and had a fun day despite the bumps in the road, it would have just been nice to know for planning purposes. I mean honestly, what is the point of having a website if you are not going to use it to communicate information such as business hours and whatnot to people visiting the site?