Try using your bathroom scale at home to weigh your bags BEFORE you go to the airport. It's probably not completely accurate, but should be close. It's much easier to try and move things around at home, then to get caught rearranging your unmentionables at the airport!
We use smaller suitcases - each person has one. I make the kids responsible for their own suitcase and pulling it through the airport. Besides saving DH & my aching back, it also gives the kids something to do and keeps their hands busy. We usually bring along one large suitcase with extra non-perishable food and inside of that a large suitcase that flattens down. Then on the way home we have 2 empty suitcases, if needed for souvenirs.
Our first trip to Orlando we packed everything but the kitchen sink. We have now learned -- you only need a couple of bathing suits, shorts, tee's, 1 long sleeve shirt or light jacket and I limit everyone to 2 pair of sandals. We normally go for 9 days and it's really amazing how much you don't need to pack. I do laundry once in the middle of the trip.
We use smaller suitcases - each person has one. I make the kids responsible for their own suitcase and pulling it through the airport. Besides saving DH & my aching back, it also gives the kids something to do and keeps their hands busy. We usually bring along one large suitcase with extra non-perishable food and inside of that a large suitcase that flattens down. Then on the way home we have 2 empty suitcases, if needed for souvenirs.
Our first trip to Orlando we packed everything but the kitchen sink. We have now learned -- you only need a couple of bathing suits, shorts, tee's, 1 long sleeve shirt or light jacket and I limit everyone to 2 pair of sandals. We normally go for 9 days and it's really amazing how much you don't need to pack. I do laundry once in the middle of the trip.
It received its own tag with heavy and the weight on it. 

We have checked before leaving home a couple times using the bathroom scale and I don't remember even being that close.
Me and dh each pull one of the big ones, and DD7 pulls the carryon - she loves doing this.