Hi - we took our two boys on a carribean cruise earlier this year on the Lirica (aged 8 and 13) Albeit there was not many kids on the cruise there was a good group of around 20 in the club mostly from the USA. Our boys thoroughly enjoyed it and the staff were great. They were open most the day and from 7pm till 11pm each evening. Would take them for tea together if they wanted and all kids got reserved priority front row seating at the evening shows. Only one big playroom which seemed adequately equipped and plenty games activities up on deck. We were fully content with the safety of our boys at all times.
Comments from past cruisers:
The Children's Club located on the port side of the ship, it is a very colorful spot that children seemed to really enjoy. So far no one else has responded but it looks a good area where they are looked after. Try looking though reviews of the MSC Lirica and see if you can pick up any other views hopefully positive ones.