With four of you, two being older kids, and wanting to keep to a 1BR unit, I would recommend one of the resorts with two bathrooms and a sleeper chair. That way the kids have their own bathroom and they don't have to share a bed. I know this is available at Kidani (AKV), and I believe it is also available at BLT (haven't stayed there yet). I'm sure someone will confirm this for you

This comes from experience......our "kids" are 24, 22, 20 and they rarely share a bed. OKW may have a sleeper chair as well, but pretty sure only the one bathroom. I agree with Bill, BLT is most convenient for parks! But I have to put in a plug for our favorite, Kidani

If you plan on spending time at the resort relaxing and want the space, it is our kids favorite! Whatever you decide, enjoy the east coast parks!!