The SVE Holiday Mixed Doubles Tournament is right around the corner from Dec 17th to 19th. As of today, there is no information on the website but hopefully registration info will be available soon. I'll keep you posted.
In the meantime, find yourself a partner and get practicing. I imagine partners will need to be from the same park/team and same rec or tencap level (or one player playing up a level). I'll let you know if those rules change.
Other tournament dates to put in your calendar:
March 6th to 11th
SSV Mixed Doubles Tournament
March 13th to 18th.
I'll keep you updated on any changes.