This.I'm on the end of a row and have absolutely no problem with any of the above, even tho it means I literally have to stand up and sit back down again about 20 to 30 times a game. Needs must. Goes with the turf. Plus it's about the only form of exercise I get nowadays. I consider it a form of chair yoga. Besides, it means nobody's counting too closely when I get up to go to the loo 5 times a game
If people want to have a comfy kip they can find a park bench somewhere.