Most people will normally have barbecue with friends and family. Fireworks at night can be setup at your home, or other places that provides for the public. Probably the only thing I like about this holiday is to take advantage of getting multiple days off from work, like me. :D
I really don't have any plans on this day. My family is out on their vacation so I guess I'll celebrate by myself. So if you want to share your plan for this day, feel free to comment.