Hey there, I'm so glad you've decided to walk the Ingles! I actually found that camaraderie on the Camino Ingles was MORE present than on the Frances or Norte or other caminos I've done. The short duration of the walk means that you never really lose your initial group, and get to know just about EVERYONE! We made some very good friends in the 6 days on the Ingles and all of us went to get our Compostelas together
That said, we stayed almost exclusively in albergues (we also walked in June). I think it's best to stay in the albergues because a) they're affordable and b) you get to meet your fellow pilgrims. Some albergues were good, and some were downright awful - but I don't think I ever called ahead as there were always enough beds.
Here's a list of places we stayed:
1. Ferrol -
Hostal La Frontera (the only non-albergue we stayed in). Very good value. Our room had two beds and a private bathroom and the hosts, who were also the owners of the attached bar, were so gracious. Highly recommend!
2. Pontedeume -
Albergue Municipal. Really cheap, and also really HOT! As far as I understood it, the albergue used to be an old sardine factory which makes a lot of sense, as there were NO windows and were were all squeezed up on the makeshift mezzanine level. It was a sweaty, uncomfortable sleep, but Pontedeume was such a nice town. I recommend looking elsewhere!
3. Betanzos -
Albergue Municipal. Ok, the OPPOSITE of Pontedeume. This was an amazing Xunta albergue in a restored stone house. Beautiful kitchen, comfy beds, windows, common areas, etc. You should stay here!
4. Hospital de Bruma.
Albergue Municipal. Another amazing spot! Nice and cool inside, beds are comfy. The owner is very friendly and there's always a meal waiting for you at the restaurant down the street. Bruma is kind of boring, but in that relaxing, put-your-feet-up-it's-the-Camino kind of way. And it's located in the original, 15th century pilgrims hostel!
5. Sigüeiro.
Albergue Mirás. This was an unfortunate stop. As the final stop before SdC, Sigüeiro has a lot of options so it can be hard to sift through them all. We picked a place with nice owners and spacious rooms (rain showers!!) - BUT, we had a TERRIBLE sleep as the owners are still renovating and we could hear all the truck traffic from the street below. The A/C doesn't work well, either, so this was another sweaty night. I'd recommend picking another place until Mirás finishes their renovations.
Overall: the Ingles was a great experience, and I don't see why anyone would need to stay in alternative accommodation. Stay in the albergues, talk to your fellow pilgrims and I guarantee you will feel that camaraderie that makes the Camino so special!
Buen Camino!