i want to buy one of the cycling suits that they wore in the olympics and ive got a feeling as it may be pretty niche that going to the olympic park mega store is my best bet of grabbing one. do i need a ticket to get into the olympic park to go the the shop
No. The GB store is outside the olympic park. (Whether there is one inside as well I do not know). You just need a fat wallet/purse to buy anything!
Maybe the store you want is in Westfield at Stratford, which is close to the Olympic park. There are 2 shops catering for your needs. Shop called TeamGB might help, no ticket required just Amex or Visa or plenty of cash.
You need a ticket to get inside the gates of the Olympic park.