Paving next to the terasse

The grass area between the terasse and the slopey gets very wet and cant be walked on in the winter. As a temporary measure I plopped some spare slabs on it about 5 years ago. 2 years ago I bought another 10 and plopped them in between the others so you didnt need giant footsteps. Long story short, I finally got around to actually laying the slabs semi-properly, with a drain down the middle. Semi-properly as they are straight onto the clay.
Time will tell whether a lack of sand and cement will come back to bite.

The drain stops under the 2nd slab, after the turn on the long northern going run.