My husband and I, now both in our 40's, and our 8 year old opted for a cruise to celebrate MY 40th as I wanted my son to also have a good time and thought a cruise was a good option as he'd be very busy. We chose the EPIC because it was voted #1 for kids, oh, and the Royal Caribbean Cruise we wanted was booked. It looked beautiful on the pictures and the reviews weren't bad, so we went with it.
I should preface this by saying I'm a picky traveler. I've been on a few cruises, the last being when I was 24. I've traveled all over the world, and appreciate 5 star hotels and restaurants. I did go into this with what I believe to be reasonable expectations, however. I knew were weren't going on a very high end cruise line and that our room wasn't going to be large. I left after 7 days swearing I may never cruise again.
4000 or so people on this cruise!
Good storage to unpack your things, and suitcases fit under the bed. The bathroom is terrible with see through doors to the toilet and shower, and a sink in the bedroom. The sink is tiny and there isn't enough room for more than one person to turn around in the entire room. Very constricted on space and claustrophobic. The deck is nice.