I laughed too hard on this one XD
Yes, it does look like the infirmary tent after a war or something, minus the dripping blood, and fresh, gaping open wound that was being dressed by doctors. = v =
They take your blood, gave you some snacks, and while you're resting, for some reason, you'll find yourself laughing with your homies who donated blood together with you 
Ah, good times = v =
Hope you get that chance to try donating blood!
don't worry, the big needle is not scary at all!
Maybe XD
Cuz I was trembling before they inserted the needle, the nurse even had to ask whether I'm okay or not XD