To get these boots you have to make a party doesnt mather who, then talk to the festival moogle in South Sandoria or the other cities. After you talk the first time he will say he needs the following:
-Lower or Higher then lvl:38 -Job -Race -Gender (does not apply for Galka and Mithra ofcourse)
Every step he will give you a card with a name on it of the person who is in your group. You are supposed to trade the card to the person who's name is on it. and the other person should also if he gets a card with your name on it.
Trade the card with your name on it to the moogle and you will get random loot. Dream Robe, Dream Boots, Dream Hat, some misc x-mass furniture / food stuff. and fireworks. if you want the +1 versions. just keep repeating till you get them.