I wish I could tell you. Out of 10+ cruises, we have never done fish extender. Would require more packing and we are already a family of 6 with 2 rooms. Looking forward to seeing y'all onboard. Congrats on your first DCL cruise. FYI, you'll be hooked on DCL after this one, so make sure you either do an onboard booking or a placeholder booking while you're onboard.