Cavalary: they can use that to order the actual resources and products they want, depending on availability, that's the only restriction, availability, and it's sorted first by merit (those with recognised major achievements get first choice, seems only fair) and then by being reasonable (those who keep ordering a lot of something will get increasingly skipped if there's not enough for all who order
The definition of merit when it comes to it can be as complex and multi-opiniated as justice not to mention different demand between something that is either practical (helping surviving or basic conveniences that indirectly leads to that) or done to increase social bonds. What if the majority of the people end up being unreasonable and people start to find in some kind of weird, chaotic way about what to do? The few reasonable will group together and try to get some kind of committee (beginning of a state) and try to help everyone by compromise (politics) and then most likely, the one who has done best for the society by merit gets access to more resources (private companies begin) and then it snowballs into a complicated society like the ones we have today, perhaps without money as the difference.
I'll stop there though because your last post solved most of the questions I was wondering about, there are still impractical problems like stopping greed, probably unknown problems as swell (mostly social tensions that take time to notice).
Also, please stop excusing or stating about the off topic thing. It doesn't matter, there're no rules against it and no point in follow it just because it may be default elsewhere.