I just looked at these and I am confused. Is TNS paying you to do this? I mean on top of covering the accommodation? Because if they are not paying then I don't get it. I have been to timeshare presentations in the past as a civilian and it is essentially the same deal, get accommodation in exchange for the sales pitch.
edit: I contacted them and, they are just covering the accommodation. Might work for some, but it's not up my alley.
You also have to fill out a fairly extensive report on the entire resort.