"How ridiculous for some on here to think the security team actually used it lol " then I wonder what it WAS used for?
When there was a cottage with all amenities hardly any distance away, with probably the same sea view, why would Boris and Carrie use a tent? They have been pictured hiking with Wilfrid so they are quite capable of finding somewhere sheltered for a picnic. If the field was over a fence, they would have to climb on the chairs to get over it - why not sit in the garden, in the shelter of the house wall? Or in the house?
The usual reason for someone to take a tent with them when renting a holiday cottage is because they need extra accommodation. They had security guys with them - where could they sit all day and almost certainly for a night shift (any danger to a prime minister doesn't go away at dusk) They had to be close at hand ready for an emergency. Should they have been even closer than a tent in the next field? How many bedrooms dd the cottage have?
Perhaps there were two shifts, billeted in a hotel/guesthouse/B&B some distance away, with the "on" shift sitting in the tent playing cards at a folding card table, or taking turns to kip on a lilo and looking forward to being offduty and released to the exciting social life of Applecross?
In the absence of facts, we have to fill in with what we know.
I have been to Applecross. It is beautiful, remote, and the houses are scattered.