Taking a cruise with two small children?

Question

My husband and I are considering taking a cruise for our anniversary; we don't have anyone to watch our two boys. Do you know if there are any cruises where you can bring your 4 year old and 7 month old. I would like them to have activities for my oldest and possibly a babysitter for the youngest. I mean, I want to be with my kids too; but I would like for my husband and I to be able to enjoy one another on our anniversary.