Over the years I have had to deal with this problem personally and as a Attendant covering my section at various Convention Centers.
I had people who were suppose to be decent Jehovah Witnesses pick up all the books, bags and coolers belonging to brothers and sisters who arrived at the appropriate time and picked them up and dumped them all at the end of the seating row. So here is what goes down, the sister runs up to me panicking and saying "Dear brother, I had all those seats reserved for my family and now look!" I look and see a pile of all the families belongings thrown on the end of the row, so I head over to the seats and ask them "What is going on?" The Witnesses who are now sitting down fifteen minutes while the music is playing, now say "We got here and these seats were empty!" I blew a gasket because I saw that sister put those items in the row I was monitoring and she had all her family with her next door with special needs situations.
It was disheartening to hear the Witnesses lie but I was not new to their game, this same B.S. happened to me in Long Beach, Ca once and Cow Palace another time, so I boldly say, you moved their stuff and you need to find your own seats. The situation now is getting overblown because the freak shows who desire those seats start getting loud, lying more boldy and the family says "If you make us move, we will leave the Convention!" Three elders are now standing there trying to solve this puzzle while I blurt out "Go ahead, if you feel the need to steal these seats from this family, maybe you don't belong with Jehovah's people because they do not lie or steal their brothers seats!" She took down my name and said she was going to write the Society, she said she personally knew the Governing Body and President of the Tower and promised me a life of Hell!"
The lack of unity with the elders at the Convention blew me away, some felt she and her hicks should keep the seats and dump this family who got the seats the right way. The solution by "Goofus and Dufus" my helper elders, the sister who had the seats first, should move to the "disabled area" or "senior section". I thought she should keep her seats and stand her ground and our sister and her family now wante their seats and said they would leave if we did not fix the problem. What a mess this was becoming as the sister and he family are getting snotty, now becoming loud to gather the attention of other friends sitting next to them. Making a scene and being lead by two of their elders, the theives of seats, moved down to the elderly section, with better seats because they screamed the loudest.
Show up late, take all the belongings of your brothers and sisters and throw them down the end of the row and lie through your teeth. Reward after making everyone around you uncomfortable and shaking with anger and stress, you get better seats and screw with the people who are doing the job for the friends. Often, the Convention Center brought out the worst qualities of the Jehovah's Witnesses who behaved badly at eateries, Hotel help and the public they pretend to be good while treating their brothers and sisters like dirt! Has this happened to anyone you know?