My wife and I are currently booked on a Regent cruise leaving on 9/9 (New England/Canada). However, a nasty virus is going around our house, and we may need to cancel. If so, we would likely try to book the similar Crystal Serenity cruise leaving on 9/14 or 9/24, which still has a few cabins. My question is, will excursions still be available? We are pretty active, and excursions are important to us. Also, what about specialty dining?