The Casino Department told me directly that it has to be the same "type". Nothing about the same cruise. My husband's offer we are booked on is an "FHS" and mine that is also the "Hot Streak Bonus" is "FHB". I also have a Jackpot Deal that allows me to get free drinks everywhere on the ship, and it's available for my current cruise, but because it's not the same "type", they will not combine it.
Ultimately we went the option that includes the best free room (Suite) and most free play for us both because I won't spend $1000 on drinks. We are getting 1 free suite, DOU anywhere for him, DOU in Casino for me, and we each get $1000 in funplay.