Four of us will be in Pamplona on Sept 5th, departing Sept 7th to Bilbao. We'd like to stop in Donasta/San Sebastián to have lunch, before going to Bilbao.
No luck so far on car hires, taxi hires or one way car rentals.
We are nervous about rideshares as they won't confirm until 2-3 days before.
Any suggestions? Only option for now is to take the train to Bilbao and skip San Sebastián.
Very easy. Bus is the best option, as there are frequent departures to Donostia-San Sebastián from Iruña-Pamplona. The trip takes around one hour and a half. Lunch time in the Basque Country is normally around 2pm, and it´s the big meal of the day, so allow time for lunch. Very frequent departures from D-SS to Bilbao daily (it takes 1.5h), so that should not be an issue. I´d say (as a local) that there´s no need for reservations on the bus, there are quite a few daily. Buses are excellent, clean, cheap, modern and very efficient.
Just wondering why 2 days in Pamplona, if you want to see the city half a day is more than enough.