@LeJaMa , I walked the Primitivo in July last year.
1/. I carry a sharp knife which I buy in the first supermarket I come across and a teaspoon for yoghurts etc. A spork would be a great substitute. The supermarket salads I bought had a bamboo fork with them however they may not always. No cup or plate necessary.
2/ personally I carry a 6 meter line (very thin, light strong nylon line) and a dozen safety pins. Used multiple times when the Albergue lines were full plus created a line in my hotel room on the two occasions I used one.
3/ I disagree with
@Pafayac in that cash used to be preferred everywhere but in my experience it is no longer .
€200 in cash is probably sufficient, worst case as
@Pafayac says you can draw more, limited to a few larger towns along the way.
I spent less than 200 Euros in cash for my whole Primitivo. I stayed in a mixture of accommodation including three Donativos and a Xunta (all of which are of course cash only.) I used my card for the rest. I visited a good number of cafes, frequently paying with my debit card. A few places had a minimum spend of 10 Euros. It can be high as 30 euros, however I only once came across that. Anything over 30 euros
by law the business owner has to provide for alternative means of payment - however that can be something as crazy as a bank transfer, not really viable for you and I on Camino.
All of the supermarkets I shopped in happily accepted my card.
Some of the 200 euros cash I gave to other pilgrims for my share of a cafe or dinner bill so they could pay with card. Saved them having to go to an ATM for cash.
4/ sorry no, I used a hotel.
It's a wonderful camino, enjoy!