Where I live, we are an equal distance from Chester and Shrewsbury, for serious (winter coat or boots-type) shopping.
We used to use our OAP bus passes on the Park and Ride at either, but now Shrewsbury P&R wont accept them. So of course, we always go to Chester. We travel out of rush hour, and usually have a coffee and snack - it makes a nice day out, quite important for hubby, who does get out much (I am more mobile).
The P&R provides the same regular service all day, whether the bus is filled with pensioners, or empty. They do issue a ticket. I'm not sure what Cardinal Sin we are committing, but can see the time when we will be stuck at home, or adding to the congestion in inner city parking areas.