The situation is starting to return to normal as the government has got pretty tough with the strikers. The main problem has been with supply of fresh produce, especially meat and fish. My local supermarket has been out of both for three days. But the wholesale food market in Palma is now being restocked and hauliers in Mallorca at any rate are operating normally. Personally I've had no problem with fuel supply, but I understand that there have been cases of petrol stations running out. Unless it all flares up again, which is doubtful, in two weeks time, you won't be affected.