(1) He frequently wakes up before me in the mornings and doesn't make allot of noise, because he doesn't pee over night (ever) he does pee FIRST thing. Right now he's in a full crib because we're not sure he's ready for a big boy bed. Plus we live in a very old house & the floors are a little slanted so I'm really worried about him rolling and falling out of bed.
We're going to get him a barrier, but I'm not sure if they are really strong enough, thoughts?
DD is 2 and falls from her converted crib every night, few times. We just place pillows under it so she won't get hurt. She continues sleeping on the floor if we don't put her back in the bed. I have seen her "falling" and it looks more like she is crawling out of her bed, I think it is like sleep walking and no rails will stop her.
(2) A reward system he is going to understand. I really don't think he'll understand a sticker chart. His great motivators in life are praise and food, however I'm not really big on giving my already hyper toddler a ton of sugar

. Any suggestions on low-sugar but high value treats?
What about toys, like little hot wheels or something? He's young enough I could also just take them away & re-give them too him every few days (Bad mommy! :D).
Or I supposed I could suck it up and give him a piece of candy for doing something as good as going in the potty!
DD potty trained first time at 16mo and at 18mo we put her back in diaper as we travelled to Europe. After that she showed no interest before 21mo, when she potty trained again.
At 16mo it was almost impossible for us to deal with her fully potty training as she was afraid to use the potty in public restrooms. When she was more ready at 21mo she told me she wants to go to potty at Target and after that she has been fully potty trained. She is 26mo now. At 16mo she was ready to use the potty at home but not outside home. She also was not able to undress her pants, only underwear and it was difficult too. Only reason we let her potty train at 16mo was horrible diaper rash, only thing helped was no diaper.
Price: We only praised her and it seemed to be the best price. She really wants to be proud of herself. At least with her it was also important to be positive about the accidents as a perfectionist she took them really hard. I had to comfort her and tell her that it was a good job and she does not need to worry, mommy will clean up.
I tried few times offering some other price but she could only concentrate on the price and could not sit still at the potty as she got so exited. She did understand the idea although it did not work

Also if I tell her that she would get something, she would be terribly disappointed if she was not able to do anything to the potty. She is quite sensitive and demands a lot from herself so offering a price for something she might not be able to do, how hard she tried, would be cruel. Of course prices might work for you son, maybe you don't need them though. If he really wants to potty train, not having to wear a diaper or to be changed is the best price!!