LGS6753
True spotters probably wouldn’t be in a dedicated viewing area unless it happened to be alongside a runway or something. If done right viewing areas can be a destination for a day out, like Stansted in the old days at the old terminal. Activity at a ‘busy’ Teesside probably wouldn’t be far off those levels.
In Europe at smaller airports there are also a few examples of bars/restaurants that are worthy of a visit in their own right.