I’ve been walking the central route. I pre booked most of my accommodation. I know when I’ve stayed in the municipal albergues a few times they had space when I got there around 2pm, but then were booked up by about 4pm. I have spoken to others who never book, they just set off walking early (6/7am) and always find somewhere.
I agree with others, it’s very busy from Tui, a bit too busy, but was fine before then. I’m currently taking the espiritual route from Pontevedra and I think it was a good decision, a bit quieter but still many pilgrims.
I just brought a sleeping bag liner and have been fine with this. Also not come across and bed bugs.
I have just stayed at Hostel Charino in Pontevedra and it was great. It’s in the old town, clean and modern with a nice communal space (inside and out) for meeting other pilgrims. Also free washing and a good breakfast.