Reviving a 1-1/2 year old thread. I cruised the Gem back in May 2014 with my family, and then the Sun over Thanksgiving 2014 week. Had a great time on both ships. Left from NYC on the Gem, from Tampa on the Sun. Boarding was soooooooo much easier in Tampa. My daughter works as a dancer for NCL, we cruise whatever ship she's on.
We docked next to the Epic while in Cozumel (while on the Sun). Darn, that's a big ship! Sun looked like a private yacht next to it.