Access to any court, any day is 100% included in the $55 player fee.
The fee gets you the magic event wristband.
Put another way - the wristband grants a player unlimited access to the Funk event courts all weekend, all three days.
Playing in the Banzai tourney on Saturday is not required,
but IS included in your $55.
Put another way - yes, you need the wristband to get onto any court, any day.
Put another way - no, free play is not free. The courts are not free.
*BONUS - a special perk bonus Coed 2s tourney is offered on Sunday as well, for anyone - and that is also included in your $55 wristband!
(Just like Saturday's Banzai, playing in the Coed 2s is certainly not required - just available to enjoy if you like, for your $55 wristband.