There are a few parking lots available throughtout town (businesses, churches, school, etc.) that can all be used unless marked otherwise.
All city streets are available as marked as well. If using this option and planning to leave it overnight, please pay attention to the parade route Sunday as you will be ticketed if left there after 10am.
Basically, park anywhere you can, within reason.
Parade Route: https://www.google.com/maps/d/embed?mid=18jS_FmTeli7kPGRjNkEoC1f1k3PyGCrs