Not true - the mint and parsley hold up well, making this a great leftover salad too - and it could likely be made
several hours in advance so you can move the «last minute» step of adding them to before guests arrive.
For the biscuits: I prefer to serve the biscuits warm — not hot — from the oven, but you can make
them several hours in advance.
Prepare
it several hours in advance so it has time to chill completely.
To accomplish this, the system would require good prediction of wind speeds (or clouds for solar)
several hours in advance, as well as a great deal of spinning reserve to substitute for the wind power when there are major changes in wind speed.