Cocktail/Semi-formal Attire. Most of the wedding will be spent outside on unpaved terrain, so if you wear high heels, they will not be functional or comfortable. However, everyone will get a good chuckle should you choose to attempt this feat. The bride will be thoroughly impressed if you somehow manage to pull it off :)

https://www.brides.com/semi-formal-wedding-attire-4800687 https://www.stitchfix.com/men/blog/features/semi-formal-wedding-attire-for-men/ https://www.stitchfix.com/women/blog/fashion-tips/semi-formal-wedding-attire/

Go to the RSVP tab. Type in your name. Then you should see "Update Response". Note if you are trying to add a guest, you won't be able to add them to your RSVP. I would suggest having your guest RSVP and then putting it in the note to us (the last question in the RSVP) that they are attending with you. Then in your own RSVP, make note of your guest. This will help us keep tabs on the correct numbers and how to seat everyone.