Where is the cart?
On the seafront at Himarë, in the run of places along the walkway. It is a cart rather than a shopfront, so look along the paving for the long off-white board with Happy Crepes printed across it in yellow.

Himarë · Albania
The cart is on the seafront at Himarë, in the run of places along the walkway. It has no frontage of its own, so the thing to scan for is the long off-white board along the front of it — the name printed across it in fat yellow letters with a red outline — and a glass display case standing beyond its far end.
The board
It runs the whole length of the counter, and the strip across the top of this page is that same board. A red star and a cartoon smiley at the left, HAPPY CRÊPES in fat yellow letters with a red outline, the words Best in town, and two photographs of filled crepes printed at the right-hand end.

Himarë's seafront is a long paved walkway with a dense row of places set back off it, running the length of Spile Beach. The cart is out on the paving itself rather than behind that line, with the board facing the walkers, so it reads from further away than the shopfronts do. Come along the seafront and you will pass it.
The rest of what this town does sweet — the gelato counters, the bakeries, the trilece and the baklava — is set out in a guide to dessert in Himarë. The walkway itself is lined with the places doing dinner first.
On the seafront at Himarë, in the run of places along the walkway. It is a cart rather than a shopfront, so look along the paving for the long off-white board with Happy Crepes printed across it in yellow.
Yes. The crepe cooks on a round griddle on the counter, the filling goes on while it is still on the plate, and it is folded and handed over there.
Yes — folded into quarters and wrapped halfway in greaseproof paper, made to be eaten walking. The same crepes also come out on plates, at the timber tables along the stretch.
No. The cart carries its own board, printed with the name and with photographs of filled crepes, and a smaller panel at the end showing a jar of chocolate spread and bananas. What it is doing on the day is what you can see from the walkway.