Yes. Kids are more than welcome.
You sure can. Please let me know if you are so I can make sure they have a spot reserved.
Casual is fine. You are more than welcome to dress up if you prefer that instead. Guests will be seated in the grass during the ceremony so women, you might want to rethink those heels you wanted to wear.
Some people are having problems getting their RSVP to go through. If you have that problem, please feel free to message my cellphone number listed above with your name and number of guests. If I have you on Facebook, you can get in contact with me there as well.