Today Mindcrack announced that their Minecon 2013 Meetup will be a paid event to pay for the space, but the event will be located at a bowling alley about twenty minutes away from the Minecon convention hall. To pay for renting out the entire bowling alley, Mindcrack has set up a crowdfunding page on GoGetFunding (a Kickstarter clone) which you can find at the source link. Mindcrack has already funded 23% of the $40,000 they need. So if you are going to Minecon (or didn't get a ticket), why not donate a couple dollars for this event? If you donate $40 or more, you get a ticket to the event! As a matter of fact, that's the only way to get a ticket :P
Note: Tickets are separate from Minecon tickets. If you buy tickets for the Mindcrack event, you do not get Minecon tickets and vice-versa.
Source: GoGetFunding