I used my NPPA member ID card during the "Holy Fire" incident to get past law enforcement blockades. I was even stopped by Forestry Service several times, they checked my NPPA card then told me to be careful and drove off.
I should have prefaced this 'all the time'.
I have seen plenty of instances where access is selective. Having an LAPD or LASD Media credential helps.
With 50,000 followers I would consider you online mainstream, with broad interest from the community as long as the content is there. Some of the daily papers around the region do not have this many subscribers. If this comes to pass I would expect the bill to have a method of separating the real deal online media such as yourself, from the pretenders.