I needed to put a dot in more than one category! Our boys were 7, 6, 3, and 3 months when we bought in 1998. Now, they are 12, 11, 8, 5 and 2. Yep, we added another baby before we did our BCV add-on in 2002.
I still don't know if they actually love it as much as I do, but with
DVC, we've done a cruise (and planning another), 3 extended family vacations to WDW, 2 "just us" long weekends with DH, and I'm planning the second trip with just 2 boys and me (oldest 2 last Dec, next 2 in 4 weeks!).
It's great for our family, and just keeps getting better. I do wish, as others have said, that we had purchased when BWV first opened.