We are AKV owners, but we love staying at BWV with the easy access to HS and EP. We have always had a boardwalk view, which is awesome! We have done BLT a few times, as well, and there is nothing like walking to and from the park, but outside of that, we are not big fans of the decor and pool. We have stayed at SSR and OKW. Both nice resorts, but they don't meet our current interests in a
DVC stay at this point in time. We have yet to stay at VWL and VGF.
Of the resorts that we have tried, Kidani remains our favorite place to stay. We like the quiet secluded feel of the resort and the wonderful African theming. The splash area
alone at Kidani is a great reason to take your 3 and 4 yo to AKV. The pools at Jambo and Kidani are both awesome, although we like the Kidani pool area better. Of course, you have the animals, which your children will never get tired of looking for and watching.
I agree with drusba, the savanna view is awesome and worth it if you have the points. But, if you need to conserve points, there are plenty of places to view the savanna all over the resort -- just walking in the hallways. The lack of a quick service restaurant at Kidani is a slight drawback for some, but we don't miss it. Sanaa and Boma are both excellent, and Sanaa is surprisingly reasonably priced, for a Disney restaurant.
We have generally had excellent bus service at AKV. One advantage to staying at Kidani is that the park buses stop there first, and are generally empty. I don't know about your kids, but my DS8 still considers the Disney buses one of the "rides", and he protests any suggestion that we rent a car for getting to the parks.

The rides to AK, EP and HS are relatively short. The ride to MK is the longest, but we are usually so engrossed in thinking about what we are going to do when we get to the park, that we don't notice how long it takes. For the record, it is about 15-20 minutes once leaving the bus stop at Jambo.
I think your kids are at a great age to try AKV. If it turns out that it is not for you, at least you gave it a try. I don't think you will be disappointed, but hey . . . I'm Kidanifan08!
