Wild Africa Trek
- I haven't heard of them making any changes, but note that we did this 4yrs ago (DH and I in early 40's, daughter 8yrs, son 10 yrs at the time -- all in good health with no physical limitations)
- About 3hrs if I recall -- early morning was great
- Need to be able to wear a harness, hook it and unhook it to move from observing one group of animals, to walking across a couple of bridges relatively high up (over crocs) -- some with fear of heights have had an issue with this
- There's some trekking around trails behind the scenes of the Safari attraction -- nothing we found strenuous -- flat and mild hills
- Then you have some snacks overlooking the Savannah -- shorter and less food than StS
- Knowledgeable guides with info on various animals and chances to ask questions
- They take photos of your party, and they remain some of my favorite Disney pics over 13+ yrs of trips.
Savor the Savannah
- A couple of hours; we timed with sunset which was nice
- About half Safari in smaller vehicle (some "off the regular path" areas), and half dining overlooking the Savannah
- Meal here is more elaborate and includes alcohol
- How informative the tour is wrt the animals appears to be dependent in part on how many questions people in your group have. Some describe it as not too different from the regular Safari ride plus food. In our case, we had A LOT of questions and the guides were amazing at answering all of them. Great discussion.
We thought both were worth the cost. We would do either again, but if we had to pick one, it would probably be WAT. We enjoy the active portion, and get plenty of great meals while in WDW. I think the extra for the more UNIQUE experience of the trek (as opposed to just the Safari) is worth it.
I think that which you pick depends on how active you want to be -- how much you'd value the Trek portion vs. relaxing at the Savannah overlook. The time of year you're going, I don't think the weather is an issue (I could see WAT being a tad rough in August).
Disclaimer: regarding your father in law -- I certainly can't speak to whether the Trek portion of WAT would be fine for him or not. If it were me, I'd think about how active he is generally, state of health, etc. If I thought it seemed fine, I'd try to describe both and ask him what he'd like to do, or if he'd be comfortable doing the trek. We didn't find it strenuous, and my in laws in their 70's who ARE active wouldn't have a problem with it. But this is so individual, so I certainly wouldn't try to make any judgment on the internet about whether it would work for him.