DD 2 and DD 4.5mths. We will be using a carrier for the youngest most of the time. (really no sense to keep taking her in/out of the stroller. Oldest will want to walk (which scares me; and I may try a harness which I never thought I would do & I know that is a whole other debate) ANYWHO... with one walking and one being carried. Do you think it is possible to take a single and alternate? then when my oldest gets real tired just let her rest in there??? that would save hauling a huge stroller. Opinions???

It is nice and comfy/roomy. I don't know what my DD2 will do with a harness. I'm guessing falling to the ground screaming.
But since I started debating whether to use one or not, I had a bad dream. We were in WDW MK and we turned our backs and she was GONE! I woke up heart pounding, sweaty and said, guess I'm using a harness. As much as people debate about them, I think I much rather have my daughter then be on the news begging for her return. Gosh, just thinking about that scares the crap out of me. 