I took five in my area. I took my husband and a 2 step kitchen step ladder. I'm 5'6" with bad knees and another issue that would make climbing ladders unstable or even dangerous. The first one was about 8 feet high. The majority were an old-fashioned wall hanger that does not extend or swivel but lies completely flush against the wall. The first one was impossible to get behind the tv. The second one the cable box was inside a silver box that was screwed closed and could not be opened without tools (we tried a pocket multi-tool, like a pocket knife)) The third needed a screw loosened with a tool to take the TV off the wall mount. The fourth had the cable box secured inside the silver box and needed tools to be opened. It was not until we got to the FIFTH one we were finally able to change it but it took both of us. He could not fasten the cable behind the tv without taking it down. He held it while I attached the cable to the back of the tv, then I had to hold the tv while he fastened the other end to the cable box, while elevated. Then he put the tv back up. I talked to the MSP several times because initially I kind of felt funny not being able to do the job. After these conversations, I have no problem with it. For this particular contract, we were not expected to need or bring ladders and tools. We just take the pictures and take notes and it should not be a problem. I believe that for the locations that are doable but require tools they will need to agree on a new price with the client and will result in other assignments. But we/they (MSP)/them (client) do not know which locations are which until this first attempt is made.
Basically, even though it would have been smoother, less stressful, and less confusing to just walk in swap out the cable and leave; the bottom line is simple If I'm going to get paid the same amount of money to walk in and take pictures and type a short note I'm happy. Either way that's all I care about.
P.S. Yes, I did end up telling them that I took help for this assignment and he was ok with it. (It's better than risking damage to the TV) plus most of the tv's are in the waiting room (all of mine are) and so the assistant is not in any secure areas. (added bonus for them: since my husband and I both are shoppers he got to pay base pay without incentives for 4 of my five locations since we route together. The fifth location had a small incentive for mileage but I had to pass by that town on my route anyway)