We're taking our boy/girl twin 2 year olds (28 months to be exact) and 4 year old daughter to SF for the holidays. They've traveled before but always with my mom. This will be the first time with just my husband and I and first time in their own seats. My husband seems to think it will be a breeze but I have a feeling I will be the one to deal with any and all mishaps! Has anyone else been in a similar situation? Any help/advice/prayers (!) are happily welcomed!!!