Alexander said:
You can get a life vest to fit your children at any of the Disney resorts. You can keep it for the length of your stay. We always get one for our son. We never have had a problem swimming at SAB with him. Personally, I wouldn't let my child, even 11 out of my sight at a place as busy as WDW. It doesn't take much effort to sit by the section of pool your child is swimming in. And for goodness sake, we always get in with our son.
Yes, you can get a life vest. Did that.
Yes, you can get in the pool with them. Did that, too.
But the human body just isn't readily divisible by 2 or more (or at least, not without creating a mess...)
In other words, if you have more than one child, and those children are at different swim levels / desires for action, you may well be in for a calisthenic workout at SAB. We had our 2 boys (9 and 8) and our 4yr old dd with us. Boys wanted the big slide. If we want to be with them (and we are the kind of folks that do) DH or I had to split up and one go with them while the other stayed with dd. If they were gone too long, next thing you know, dd gets curious. SHe wants to go over to the "little slide" (in the boat). SO ya get out of the main pool and walk across the sidewalk to the little slide. If it's off-season and there's a chill in the air -- walk fast! But now ds,ds, and DH are nearly ready to go down big slide... so now THEY are in the main pool, and dd and I are over in the boat. After a bit, dd says, "Let's go back to the big pool!" So we go to the shallow sand area...DH stays with dd while I take boys on lazy river. Suddenly one son wants to slide -- other wants to do lazy river. We must now strike a compromise, because as I tell my kids, alas, I am but one woman, and it's just too big a pool. If one son heads to slide -- you cannot see them for the duration of that wait. Totally lose sight of 'em. So Slide Boy goes in circles waiting for his turn while Mom tries to keep the peace on who goes where, when, and how. Rewind and replay this several times over the course of the next few hours and you have our day at SAB. Granted, they don't always want to be 3 places at once... but if you too have a Mild child, a Wild child, and a Wants-to-be-Wild-but-is-vertically-restricted child, you may just feel our pain at SAB.
We like our pool time to be a relaxing time together -- for this sort of "divide and conquer" experience, we could go to TL or BB. Not exactly what we're looking for at the end of a busy day! In contrast, most of the other pools (VWL/WL, OKW,SSR, BWV) allow your family to remain in one body of water, with all parties nearly always visible, no matter what their swim level or "thrill" desire may be.
Perhaps when our kids are older (say, teens, when they would prefer not to see their ol fud-dud parents anyway), SAB will be easier for us all. We do LIKE the SAB; it does have many wonderful features. It's just that, logistically, it's not as parent-friendly for the multi-child family as the other pools. Making that statement doesn't make us chaise-potatoes -- a life jacket should never be a substitute for parental monitoring, and we are hands-on parents who always get in the water, too. It's just that at SAB, we have to do a LOT more getting in.. and out...and in ... and out... than we found necessary at other pools.
That said -- back to the original OP -- my boys have now stayed at all the resorts, and while they differ in opinion on some, they BOTH agree that VWL is awesome. I think this was even more true at the ages you suggest (5 and 7) than at their current ages, because they were much more into MK then and the slide was much more their speed. The slide at WL is really good for that age group -- swift and peppy, but not too daunting. My boys LOVED seeing the "wildlife" there (we saw otters, rabbits, and there was a family of baby ducks on one January visit -- too cute!) In the summer it feels 10 degrees cooler there; in the winter, 10 degrees cozier! And the boat ride over to MK and also FW (for HDDR and the activities, animals, campfires there) is a great option as well.
But here's some good news -- all the resorts are great! Good luck choosing one -- you really can't go wrong, there's something to love about every one of 'em.