We have in Wrocław this stupid system of URBAN cards, which is some personal ID card, on which you can buy and code your tickets. To get the urbancard you need at least one week to get it - with standing in lines, filling a lot of papers, giving a photo of you, etc. "Imienne" means in this case "attached to a name" so means having urbancard.
Buy 168 hours (7 days) ticket an be happy you can do it (geniuses from city for a long time set the maximum "long time ticket" only for 72h. Not very helpful for foreigners, don't you think?)
If you are going to spend whole days at the competition you really need just 2 x 3 PLN ticket ("one way ticket" without transitions between trams/buses, or "half hour tickets" (with as many transition you can do in this time). To make this system more complicated there are some fast buses (which are... pretty slow, i.e. Bus "K" is the third slowest line in the whole city!

To have a ride on them you need 30 min. ticket or... buy "one way ticket" being slightly more expensive that usual one. Oh, for all night buses, if you don't have timelike tickets, you also have to pay more...
I recommend using page
www.jakdojade.pl. Use tram 9 and 17 to get to venue from Avantgarde Hostel (see direct link
http://goo.gl/xzB4n)!