To RP, just comment something like, "(RP?)" Or to be specific, "(RP in Moo City?)" Then hopefully, another RP member will look through the comments, find the comment, and then they can have fun together. If you want to buy something in a shop, do the RPing there
Mootopia is a Minecraft world, the dominant species being, well, mooshrooms. There are also a few cows and sheep though.
Here are a few of the major cities:
Mainland Mootopia is the capital city of Mootopia. It is the second largest city and overlooks the north sea
Moo City is the largest city in Mootopia. It is basically connected to Mainland Moo when you look from high up, but it is still a different city. Here in Moo City, trades are very interesting; from great prices, to horrible ones, to the most peculiar bargains.
Moo Kingdom isn't really a Kingdom, it's just the third largest city; but it has a castle; and Royalty. (RP members who want to be it.)