Ok, I'm going to offer my opinion regardless. lol.
My daughter and husband got two new HD tvs, so I told them to call Dish and get a free upgrade. Dish comes and installs a new dish outside, a vip612 in the boys room, a vip722 in their bedroom and hooks up the tv in living room. They call and get the HD pack for $10.00 a month. I stop by Sunday and they have the new HD tv in the living room on. I tell them that the picture looks really bad and start to check things out. First the boys room has the vip612 hooked up to a SD tv with coaxial cable. Next the bedroom HD tv is hooked up to the vip722 with a RWY RCA cable. Now on to the living room HD tv. Dish has that one hooked to the vip722 in-home distribution output.

Told them to call Dish back and set up a Sat. appointment so I can be there.
First off, jumping on the evil dish tech bandwagon will get you no where. Lets not forget that your daughter or son in law signed the paperwork saying they were satisfied with the install at the end of the job.
HDTV's are a normal thing in the year 2011. Its about the only thing you can buy on the shelf now a days. So to say you have 2 hdtvs doesn't really mean much anymore. A 13" hdtv will have a crappy picture no matter how awesome the satellite service or the cabling.
A 612 in a kids room is normal. Making tv2 in a kids room ...well lets just say when oprah comes on to record at 4 and the kid just comes home from school and wants to watch tv in their room (mom and dad put it there, so they are going to watch it there) only to find oprah is on because mom wants to record it doesn't go over very well. -that said a 612 is common for a kids room.
The 722...
Is the home prewired? Is it by chance wired with 59? Did your kid refuse a new cable run so the tech could put the 722 into the living room? Is the TV hanging on the wall and only a coax runs to the mounting location and your kid refused to have an exposed cable from the rcvr to the tv? Is the son in law butt hurt about how the cabling is...he doesn't want all of the cables in the living room? Were the TV's moved around after the tech left? Were all of the TV's on site when the tech was there? Are the televisions near the rcvr location? The questions could continue on...
I will say that the tech not giving your daughter the proper HD cabling is uncalled for. As mentioned, if they have a off brand 13" "HDTV" in the bedroom, no cabling is going to make it look great. I am not making excuses for the tech, but automatically blaming the tech can really make you look ignorant also. As mentioned, your daughter or son in law signed stating they were happy with the install.