I took my son for the first time last fall at the age of 5. I build a "stand" forus that was 6'X3' with 24" side walls out of 5/4 treated deck boards and 2X6's that was 10' up in the air.
I brought him with me 3 or 4 times in early bow season when it was still pretty warm.
The best advise I have, is bring something quiet for them to snack on (gold fish, little crackers etc.) and put them in a bowl, so they're not reaching in a bag.And a bottle of water. It just gave my son something to help pass the time.

And pay attention to theweather. I have a buddy thatlives for dear hunting,but his son (who is now 20) has nothing to do with it, and has really never had anything to do with hunting. I asked him why once, and he said that whenhis sonwas 5 or 6I (theboys father)screwed up big time. He took himhunting during shotgun season in November and hefroze, he got some minor frostbite in his fingers and toes and the kiddidn't want to complain because he didn't want daddy to get mad, and he has wanted nothing to dowith it since.

I really paid a lot of attention to that lesson, and when Zac said he was cold last fall we went home.
Like some of the guys said, have fun with it. You will get some great laughs from the silly little stuff they say or ask when you in the woods.

We got the chance to see a couple of twins just barely out of their spots playing 18 yards from our stand and the look on his face and the focus in his eyes gave me a feeling I don't think I'll ever be able to describe, and then to see him almost explode when we got home and was telling my wife about it, I knew that I'd done the right thing by taking him.

My dad told me the day I shot my first white tail (I was 11), that out of all the deer he has ever killed, none of them gave him the feelings and emotions that he had when he watched my doe fall. It brought teers to his eyes. And I know, as excited as I get just seeing my son's reaction when he see's deer and goes hunting that we are going to get to share that same moment! I can't wait!!

I'd say bring at least the older boy, I promise that you will get a feeling of satifaction and pride that you will never forget!

I think a lot of parents nowadays don't spend enough time with their kids anyway and in my opinion a couple of hours in the stand with your boy will be an investment that will bring you and him together each and every fall for the rest of your lives!

Happy hunting!