Take some time now to learn a few basic words. If you don’t already speak Spainish.
Walk with pack on. Especially up and down hills.
Thread mill at the gym may help.
But nothing beats outside walking with your pack on hills. On the road and off road. Walk on different surfaces if possible. I.e. gravel , dirt, sand, pavement, yes even sidewalks...that gives you realistic training that will help.
The gym does not let you experience wind, rain, sun, dust, mud, car/truck horns, wind blasting from trucks, scotters, stopping for breaks, etc.
If this is your first Camino try to get out of gym and get outside.
I didn’t make any reservations for sleeping. Did not have a problem.
Stayed in private and alburgues.
Did not need a map, GPS, etc.
Hard to get lost.
Always recommend two walking staffs.
Helps for going up hill and especially down hill.
Reduces pack load on your body.
I always stay in Hotel Silva when in Ferrol. Clean place.
((Grew up in Ferrol and Seville. So Ferrol is second nature to me. As well as Seville))
Walked first day from port to traffic circle on the CI in Ferrol.
Hotel Silva is few blocks up from the traffic circle. Picked up the CI next morning from Hotel Silva.
Laundromat down street from Hotel Silva.
Pack light. If you need something that bad many places to buy it.
Camino is CASH driven.
Again, e n j o y! It’s not the AT.