如果只有6月初或者9月初有假期的话, 哪个时段参加这个游轮计划比较好?
https://www.ncl.com/cruises/7-day-alaska-with-glacier-bay-from-seattle-PEARL7SEAJNUSGYKTNVICSEA/Dates/April-2018-to-September-2018?destinations=4294961386&numberOfGuests=4294953449&state=null&&itineraryCode=PEARL7SEAJNUSGYKTNVICSEA
为什么? 谢谢!?