How can anyone tell you if you'll be disappointed? Everyone has different opinions and you may like Carnival more than Royal Caribbean. As far as comparing Voyager and Freedom class ships to other ships? …it's like comparing a compact car to a SUV. Some people don't like the mega ships…even though they offer ice skating shows, and the popular Promenade deck. A cruise vacation is about having a great time more than about which ship you're on.
Let us know what you think after your cruise with your friends.