The clue to decrypting this message is written at the top: "If you're tied 10-10, it's the minimum score you need to win".

If the score is 10-10 in a game of pickleball, what is the minimum score you need to win? If you're not sure, visit the website listed on the pickleball poster (www.saguaropickleball.com) and go to the "Rules" section.

Pickleball games go to 11 points, but you need to win by at least 2 points. If the score is 10-10, you will need to get at least 12 points to win. The answer to the clue is 12.

This is a skip cipher. Read every 12th word (Starting from "You're — that's the first word).

Decrypted, the message reads:

tomorrow greenhouse at 9PM trust me you’ll want to see for yourself