I've seen from some on here that the Black Friday Sales are the best of the year. Problem is our ship leaves on Black Friday November 24th of this year. Would it be too late to reserve something the morning of? I'm specifically looking at the zipline in Labadee. We aren't getting the alcohol pkg. We all don't drink alot, just here and there and I have around $500 on board credit we'll use for drinks, etc.