Terrible twos? How about terrible 15 months?

Recently I was reading a book which said contrary to what people say the terrible twos start earlier (15-18 months). Well this explains why B has horrible fits day and night and has been driving us all crazy. Now I am not sure if the tantrums start around this age and will continue throughout the second year. I haven't gotten that far in the book. But I am going to be optimistic and hope that in a couple months these will go away. I know go ahead....laugh all you wise moms of older children....it doesn't work that way does it?

Stroller Dilema

We are going on our first "family" vacation with the wonder twins in a week. We are going to probably the most un-family place...Nantucket. J and I love the islands and missed not going last summer. So off we go next week with 15 month old twins. First dilema was finding a place that would take kids. Once we crossed that hurdle the next hurdle has been what to bring. Since we are not bringing a car we will basically be pack mules and lugging eveything. This brings me to the stroller debate. We have a Graco duoglider and then two cheap kolcraft umbrella strollers. We have decided to bring all 3 strollers. What do you think? Crazy? I'm going back and forth on this. If you've travelled with twins let me know what is essential to pack and what you did re: stroller issue