Conception - The movie begins on the Queen Elizabeth II at Nick and Liz's wedding. The next scene is the beginning of camp...11 years and 9 months later. They are implying that the twins were conceived on that ship. Assuming camp began in June, this would mean the girls date of conception was probably in September/October but we know their birthday is October 11th so they were conceived in January. Now, if they were conceived in January, that would have been a very cold cruise across the Atlantic so fireworks would probably not have been blasted during the voyage. Camp - It is highly unlikely that the two parents would have sent their kid to the same camp at the same time...especially given the location of the camp. Drop off - No parents are seen dropping their kids off? Something is strange about that. Counselors - Why are there only two adults running this camp? Where the heck are the counselors? Boy - A boy ends up at a girl’s only camp but we see this kid later so ...