When my kids were little, I was afraid of misplacing one of them in the confusion. My oldest has always been difficult and the most prone to temper tantrums so I was more worried about her than the other two. I dressed them in matching outfits so it would be easy to see that they belonged together. When they were toddlers it was a lot easier to find things for all three of them.
I taught them to find an employee of the place we were in if they ever got separated from their grown up. We practiced looking for different name tags at home in our grocery stores and
walmart. Thakfully we never had to use it in the parks.
It did come in handy during a convention in Orlando though. We were there for the day and planned to have dinner at DTD before going home. During the afternoon, my ex went to look at something a few rows over from where I was and left all three kids with me. I stopped to look in a bin and my girls were playing right behind me. I turned around a moment later and only saw DD#1. I asked her where her sister was and she said that the younger girl went with Daddy. I asked if she actually saw Daddy and she said she didn't know. I became frantic. The place was crowded and my DD wasn't quite 3. I looked up and down the row we were in and the ones right nest to it. I didn't see DD but I saw my ex. I asked him if he took DD and when he gave me a blank look I told him she was missing. One of the booths a few rows over had a sound system that could be hard over about a third of the hall so he went to ask them to announce she was missing. I was walking to the front of the hall to alert secerity and to keep them on the look out. I only got about half way there when I heard over tha PA system that there was a little girl named ****, wearing a striped shirt and red shorts up front and she couldn't find her family. I had my other kids and poor DD #1 was running to keep up with me as I went to see if it really was DD. I got there and saw my little girl, quietly waiting for me with a janitor! I was so relieved!! I scooped her up and started crying. She said "Mommy, I could't find you so I found a nametag!" The janitor saw the other two weariing the same outfits and said he figured she belonged with us and went on his way.
Kids do the most unexpected things. The best way to make sure you have the best possible outcome is to be prepared. Have a plan and practice it before you go when you child is relaxed and comfortable.
I hope no one had to use any lost child measures and has wonderful trips!