You certainly picked a great ship for your first cruise. Allure is nothing short of amazing. The ship is probably the best example of a floating resort where you will find it hard to run out of things to do. Just go with what you want to do! The Cruise Compass is the daily activity list and it is delivered to your cabin each day. You can also get copies at the guest relations desk if you need extras. Read it carefully. I always have a copy with me.
Tours are subjective. As you may suspect, many of them do have age restrictions where a 2-year old cannot go because of what the tour entails. You will be able to see videos of all the tours on your cabin TV which will help you decide.