When you find the right newspapers in the right place and time, they are GOLD! That said, like any other source (including official records and carved-in-stone grave markers) they can be inaccurate.
As you check through every record you can find, the most accurate info will usually rise to the surface. Or at least you will have a good basis for analysis.
I have some newspaper articles about weddings that took place in the early 1900s in a small-ish Midwestern town. Those reports name the songs and when they appeared in the wedding program, and who played the piano and/or sang them.
Also, in detail, described the flowers used to decorate the venue (sometimes a church, sometimes a private home), the bride's and maid of honor's dresses, and other little details that no dry vital record could do.
One of the flower girls came down the aisle with the ring held in a calla lily flower.
They even reported the groom's (and sometimes the bride's) place of employment. Not to mention the relatives, friends, church and club memberships. There is nothing like a good newspaper article.
The articles that consist of bits and pieces of visiting can help you track down records in other places. I found a missing marriage record, two counties away, because of one line in a newspaper.
I'd recommend testing subscription sites at your local library, because they don't all have the same papers. If you don't get the right match of place and time to where you are in your research, you won't want to pay for a subscription.
Happy hunting!