I agree with the others above to choose your resort based on the parks you will frequent the most, but I just wanted to post here because I also have twins and we took them to WDW when they were 18 months old. So I can comment from experience. You will see by my sig that we love the Epcot resorts, with BC being our favorite. Now all kids are different, so keep in mind this is just how it was with our girls, but my girls didn't care which park they went to at that age. So those were the days we loved being at BC. We loved to let the girls walk/run off steam in that whole boardwalk area around the lake. It was so quiet and peaceful during the day that DH and I could have a drink while we slowly walked around that loop and let the girls laugh and walk and have some fun without all the crowds around. However, once they reached around age 3, maybe closer to 4, they discovered they love the rides at MK and so we started to rotate trips between our favorite Epcot resorts and also the monorail resorts. YES, it's totally easy to roll a double stroller on and off the monorail and extremely convenient to stay at a monorail resort for that reason. So....having said all that, I still do recommend you choose the resort based on the park(s). And from personal experience, BC was the right decision for us. Good luck and have fun! That age was so precious in Disney!!