Of particular note for the WIld Riders - and any model that can do what they can (run and charge) - what you want to do is charge in, do your damage with your bonuses for charging, and on your next turn disengage, run, and then charge right back in if you still have enough models for the charge bonuses again. This is especially true if you win the dice-off and get two turns in a row.
Most cavalry benefits from disengaging from combat after the initial charge and going in the next turn -
WR are especially good at this tactic because of their rules.