NO! you are allowed to buy 2 tickets for the show .. This eventim tickets just mean that you can watch LP playing that night! For the summit you have to reserve your tickets, and print our a barcode: http://lpu.linkinpark.com/summit-hamburg/ : go there -> for reserve your summit ticket! You have to print it out and bring it, with a photo ID, to the show!
Only one Summit pass per Person!!! If you want to bring your Girlffriend, she has to be in the LPU, also she must purchase / get the summit pass!
I already got my ticket to the show, as well as the summit barcode ticket This is gonna be the best day ever cannot wait to meet all you guys!!!!