hello, my husband & I are celebrating our 10th anniversary in '05 and want to plan a special family trip. we've never taken a cruise, though my parents convinced us that this is the best way to travel. our daughters will be 8, 7 and 4 yrs old. they love kids clubs and love to swim. we are deciding between rccl & princess cruise lines. which cruise line and/or ship is recommended for this age group. we want an elegant ship that is not just for seniors (ie: older guests may be less tolerant of young children?). any advice at all is appreciated!