Yes! If you are staying at the Best Western or Country Inn and Suites! It starts at 3:30 and runs until 6:00 and then again from 8:00-11:00.
If your invitation says "and guest", then of course!
Please wear whatever you are comfortable in. I would say "cocktail" attire, but do remember we are outside, in a backyard, under a tent, so wear comfy shoes that are easy to get around in!