I previous did this with a small Holland American ship. For this season, Celebrity has Solstice, Eclipse, Edge, and Millenium. Are there any advantages to taking the smaller M-class ship, ie can get in smaller bays / closee to ice etc or are itineraries basically the same. Also, on Alaska cruises, do they open up the helicopter pad at front for viewing, and can kids use the indoor pool at certain times of the day. Thank you.