Between 2pm and 2.30pm to be seated by 2.45pm latest.
The nearest town is Paarl, which will have many guest houses and accommodation options. Wellington is a bit further out, but also an option. Uber is available in this area.
Unless specified on the invitation message, where both members of the couple are named, there will be no plus one's allowed.
Unfortunately this is going to be an adults only party! So please plan a sitter for that night, so that we can enjoy it together.