Don't count on upgrades as far as booking a gurantee - only book an inside guarantee if you want an inside cabin. It seems if they are offing the upgrades then you will probably have less of a chance at an upgrade on a guarantee because they will fill the upper cabins with people buying particular cabins with upgrades and then that leaves the lower levels for the guarantees. Debbie
Ships tend to sell out from "the top down and the bottom up". Higher priced and lowest priced accomadations sell out the fastest. I would book the class of accomadation you want. You may just end up with a bottom of the line inside cabin.