BJJ fighting, much use in a car park brawl?

Your TKD training is much more effective in a street brawl. If your opponent has a friend or 5 hanging around, they will treat you like a soccer ball while you are trying to lock in an arm bar on the floor. Outside of the octagon, your order of operation should always be avoiding, then eluding, blocking, striking, running (if you're outnumbered or a weapon is involved) and finally ground game.