MSC Seaside child care and behind the scenes tour question

[kasia07]

Good morning! 

We are sailing on March 23 with 2 families. Our boys are best friends, in the same grade and usually the same age, but a month prior to the cruise my son will turn 12, his friend not until 2 months later... I am wondering if anyone has had the experience of the ship allowing the children to stay in the same club when they are just a few weeks away from the age group? Also, does the Seaside offer after hours child care? 

Finally, is there a behind the scenes tour of the ship? Did you like it, how much was it? Thank you in advance!