You're very welcome. As speedjester pointed out, you really do not know what has happened at ANY outlet previous to you plugging in. You never know what the previous camper, electrician, or park person may have done before you..........or shorted out.
Also as with anything electrical or mechanical, things just break or wear out.
I would advise even checking your own generator before plugging in, as things can become loose/disconnected from the vibrations when running.
You may be lucky and never encounter a problem...........but it's that one time you do catch a problem that makes you glad you did check first. There are actually many posts in these forums just like speedjesters, so it's more common than one may think.
You can also purchase either hardwired or portable Electrical Management Systems (EMS) that will do a lot of this checking automatically for you.....as well as having a surge protector.
Here is a link to a 50 amp hard wired one.
A surge protector is another good item to have...... which you can purchase as a cheaper standalone item, or built into an EMS.