Hello @garsenault 
Welcome to the Canvas Community. Thank you for posting your question. I believe you're going to need to reach out to your school's local Canvas Administrator or your school's Online Learning/eLearning department to ask them about this. From a Canvas Administrator's perspective, they have the ability to select which web services are available for you to connect to your Canvas account...including Google Docs Preview and Google Drive. This is the Guide that your Canvas Administrator would need to set this up for everyone at your school: How do I enable web services for an account?. I found this page on your school's website that might have some contact information for you: eLearning - University of Florida.
I hope this information will be of help to you, Georgie. Please let Community members know if you have any questions about this...thanks!
