I actually concur with the law that underlies this demand. Some free access SHOULD be provided.
Also, I believe that SOME grant funding WAS provided by SOME government along the way, for some portion of the Cathedral renovation. Be it Galicia, Spain, or the EU; in that context, the demand (request) is not unreasonable, at least IMHO.
Based on my direct knowledge of the crowd pattern, weather, and daily tourist and pilgrim loads in the old town, I opine they should grant free access on Monday - Friday mornings, from 0800 to 1200 noon (FIVE days a week). That should satisfy the government, as it goes well beyond the four-day per month minimum. It should satisfy the tourists as it is early in the morning. And it should satisfy the pilgrims...it's free. Given the distribution of visitors, I do not believe the reduced revenue will harm matters.
Plus, it structures the day so that money is not collected until noon each day, this aids security issues.
If this is not doable, for some reason, then perhaps offering free access for four hours, on three mornings (Monday, Wednesday, Friday) is possible. This is a logical pattern that most people can remember.
In my direct observation, having spent a month near this spectacle, the lines are HUGE, every day. However, they are smaller earlier in the morning.
Offering these, specific, free hours might push some of the demand from the hot, usually sunny, afternoon hours to the cooler morning hours. This helps everyone and everything involved in this.
Hope this helps the dialog...