Hmm, well, I'm at the top of my leaderboard, but I don't really have any secrets. If you start out with 13 or 14 granted wishes waiting to be picked up at the beginning of the event, you know, that gives you a big head start. I didn't, this time, so I've clawed my way to the top the hard way. Wishes come consistently every half hour until you reach seven uncollected, granted or ungranted, then they come much slower until you collect the ones you have, so it's helpful to check in and grant and collect wishes at least every 3 1/2 hours, preferably more often if you're leaving the game while waiting for characters to finish wish tasks, because every one that's in progress still counts as one of the seven. If you're willing to get up once in the middle of the night, well, that gives you a potential 7-wish boost. If you think there may be a granted or ungranted wish somewhere in your park, but you can't conveniently find it, or if you have a bunch of wishes scattered around, you can go visit someone else's park, and when you come back to your own park, all the wishes--except the ones in progress--will be gathered together up at the front gate. That's about all I've got.