Later and Later Check-in times

I have a COE site booked in Texas for Dec. It states check in time is 3pm, no early entries. Last year, at the same park, with reservation, I arrived about 2:15. Only 4 other campers in a 104 site park. Pulled up to the shack, I was told that I couldn't go in. My reply was, I'll wait right here then.
IMO, I think a lot of "Camp Ground Host" are getting lazy.
I guess that I'll be able to sleep in some that morning.