I must be strange. I love trade shows. Having said that, I have attended an ADA expo and thought the show was very well done. The show is a place where almost all of the diabetes products you can think of will be on display in one place where you can finger, manipulate, play with and talk to sales reps, and maybe even rub shoulders with an expert or two. I found the seminars and presentations interesting and informative. I also received six CEUs for going to the expo.
Now, for your son. Is this something that he might enjoy? Are you looking for something special, like a pump? Is he scholarly enough to understand and enjoy some to the seminars that are offered there? If so, than it will be worth the day. I suggest you get the daily schedule of offerings and discuss with him the merits of going to learn and listen to all that is there. If the results are positive, by all means, take him. If not so much, go yourself, and you may tell him what he missed, or learn something on your own.
I am not a big fan of the ADA. I suppose they have their place, but all that I have ever received from them is a magazine filled with a bunch or recipes that I cannot use and a continuous stream paper begging for money. I did think they did a wonderful job of putting together this expo.