Amulet Coin you get from your mother after beating Norman, same as in the base game.
Some feedback/glitches
Exp. All is completely overpowered. It doesn't seem to split the XP, you just get a lot more of it. I'm on 6 badges and my two strongest Digimon are 10-20 levels ahead of everything I'm facing. Rest of the team is at least on par.
I went to talk to the dude dressed as a sailor just south east of the house in Slateport where people tell you about the natures of their Pokemon. It triggered the event where Stern is giving a TV interview and someone shouts on a megaphone then everyone runs in to the harbour building. I was then teleported into the building. There was a Team Aqua member stood next to the woman who tells you that there's no boat there, but you can't interact with him.
I went into the Trainer Hill next to the Winstrate family to heal, when I came out I was in the middle of the desert.
I went back to Slateport to try to buy Harbor Mail so I could swap it for a Coin Case, I couldn't find it anywhere, I assume that's because of the Marts now having the same items in every store.
There are level 88-100 wild Gaomon in the little cave that leads to the power plant southeast of Mauville.
I don't mean this to sound negative, because it's still great work, just thought it'd be useful to know.