So 150 gralats for an event, in my opinion, is a complete ripoff.

How about EVERYONE is able to participate free of charge but ALL losers MUST farm in a collective farm (of admins) just as a "fee" for participating in event? These gralats would obviously be locked and once the gralat fulfillment has been met (I'm thinking like 20), they are free to leave.

How's that?  

While I don't like paying 150 gralats to get in.
No one would want to join. when there's a chance you're going to be held hostage, until the demand is met.  

Farm slaves? Not gonna happen.

I think that the hats for the first win of an event need to go. Leave it as tickets. Make the actual purchased event hats (the ones in the tent) reasonable ticket prices and K.I.S.S (Keep it stupidly simple).  

I don't like the idea of being held hostage for gralats, Like 4-lom said. But I do feel that 150 gralats per entry is kinda a major rip off, Especially when you don't even know if you'll get a ticket because of these random hats you could win. Don't get me wrong, Hats are cool but you shouldn't replace it for tickets. Because not every player will even want the thing. Most look like they was made in like 5 minutes like the Halo, Then they just change the HUI for different colors. That's my only issue with it. And possibly the frequency of events could be more? I have a alt on usually to gain hours. I had it on an entire day to get 17 messages, From 8 in the morning to 6 in evening. 13 was carnival events.  

A simpler solution could be to just refund the winner of the event, maybe even just 50%.