"From these events you get event tickets which can be spent at MoD Carnival."
Actually... from these events you have to first win them once to get a poorly drawn hat or accessory, and then you have to win the same event again in order to get multiple tickets. If you lose the event, you get one ticket. If you win the event (after the first time) you get 3 tickets. Additionally, if you win one event, then play and win another one, you get a recolor of the same poorly drawn hat or accessory.
Yours truly has like 12 different glasses and cigarette hats from the previous event cycle and has stopped playing most of the paid events because they are laggy, glitchy, and often have unregulated cheaters playing them serially to amass tickets by using techniques such as 'pausing' the game in snake pit in order to not get hit, somehow getting infinite hp in games like snowball fight, glitching through walls in chance, etc...