Hi, we stayed at Summer Bay last week. Resort was terrific, units were great we were the first to stay in a brand new 2 bedroom unit. The only downfall was the distance to Disney etc. It was March break and the US 192 was crazy with traffic took us about 1 and 1/2 hours to go around six miles. If you go at a time when Disney is not busy should be OK. We also stayed at the Amerisuites at Calypso Cay after Summer Bay the pool area is great , great entertainment, heated etc. I do not know what the Runaway bay units are like, but there were lots touring them.
We did the tour at SUmmer bay for 2 disney tickets for $50.00 took about 90 minutes, but we got to see the pool homes, very nice. I would stay at SUmmer bay again but only during non peak times, but I would stay at anytime again at Calypso Cay as the locations to Disney, US 192 and International Drive is too easy.