@bethanna,
When my children were younger, they had to sit in the shopping cart at the store–no exceptions. When ds was too big for the cart, I trained him to hold on to the cart. Dd was still sitting in the cart at this time, so I was only training one. By the time she was too big for the cart, he was already habitually holding on to the cart, so then it was time for me to train her. Now, at almost 9 and 7.5 years old, they still hold the cart, one on each side, when we’re at the store. Now, though, they like to help me at the store. Dd loves to check items off the list; ds likes to push the cart himself. Holding on to the cart keeps at least one hand from reaching out and grabbing or touching items on the shelves; you could always have them keep the other hand in their pocket or holding on to a stuffed animal to keep it “occupied”. If they let go of the cart, give them one warning to put their hand back on the cart. If they let go a second time, stick them in the large part of the cart or just walk out of the store. I have only had to walk out of a store once. The one thing I have always told them is that “I can’t protect you if you don’t obey”. So I use this principle to help them see how important it is for them to hold on to the cart so that they’re with me all the time and don’t get lost, kidnapped, scared, etc.
We have never experienced a tantrum in the store for not buying something they wanted or forcing them to hold on to the cart. I credit this partly to the fact that we never allowed tantrums at home either. Potential fits were warded off as soon as we could see them beginning, either by distracting the child or using a very firm voice, instructing them to stop.
In public places where loud voices were a problem, I simply instructed them once to lower their voice. If it happened a second time, they must place their hand over their mouths and not make a sound until I say so. We have done this in restaurants and in our own car. Now, though, we don’t have problems with this.
Getting out with our children is now pleasant and easy. They do a very good job of staying with us, holding our hands, and being respectful of whatever place we’re in. Eating out with them is fun, and we rarely have to make a correction for behavior or manners. If we do have to correct, it’s usually with one look and they know immediately what they’re doing and fix it. CM was right; “The mother who takes pains to endow her children with good habits secures for herself smooth and easy days.”