Positive Reinforcement

We have a dilemma:

What do you do if there is not a positive reinforcer greater than playing with your brother???

So, we decided that we were going to put the boys together in a room again for several reasons that are all now seeming not so worth it. Anyhow, it is not working out so great - this sharing a room thing. We have the "Bedroom Rules" followed by "Good Bedroom Behavior" (basically the rules but with all positives) and a sticker chart for when they follow all the rules and have good bedroom behavior. Now, they could care less about the rules when there is a fun playmate in the bed next to them. It would probably be a whole lot better if they were not so into playing together. And, if they could control themselves. They have earned one sticker each, in the past week. Not good. We even stagger the bedtimes - which is not the problem - it is the waking up at the crack of dawn, or earlier, that is the problem. Whoever wakes up first (and it is usually the older one) goes over to wake up his brother. This wouldn't be so bad if it was 6:30 or 7am... but it isn't. And, inevitably, it wakes everyone else up, too. :( I went to bed at 8:30pm last night and am considering doing it again tonight. I am so tired of this. any suggestions?