Theoretically, but only if you're there to practice and you don't want to keep whatever it is you're working on.
In most cases, you'll need to come to open studio at least 2 or 3 times to see your projects through to completion. This is because making pottery is a multi-stage process that spans days or weeks at a time.
Let's say you came to open studio one day to work on the pottery wheel and you made two bowls during your two hours. If you want to trim the bottoms of your bowls, you'll need to come back to open studio again once they're leather hard, trim your bowls, then put them on the "done but drying" shelf to dry out completely. Once your bowls are bone dry, you'll need to move them again to be bisque fired* and pay for firing. Once they're bisque fired, you'll need to book open studio time to glaze your bowls and put them on the "glazed and ready to fire" shelf.
*YOU DO NOT NEED TO BOOK OPEN STUDIO TIME TO CHECK ON YOUR WORK OR TO MOVE PIECES FROM SHELF TO SHELF. YOU CAN DROP BY ANYTIME WE ARE OPEN TO DO THAT--EVEN IF WE HAVE A CLASS OR WORKSHOP GOING ON AT THE TIME!