They if the tub is constructed with proper western made acrylic like Lucite. Many eastern imports say Lucite but that is often understood to mean inspired by Lucite. There is a cheap and nasty import from the east.
Ask them if the spa has Balboa controls and if not, why not, perhaps it is old style construction. Equally, if it has a steel frame that usually means that the more Jets the better, as it simply because it is a lot of difference between inspiration and the real thing it's a bit like chalk and cheese. The water jets in a Hot Tub should obviously be planned to provide muscle massage, but like all things, they need to be painful and sometimes even very annoying. One of the water from one pump can be forced through that seat. What may look inviting in the nave belief that the more Jets are a good thing, which is not just simply a question of sticking some Jets here and there in the nave belief that the more Jets the better, as it simply does not work like that.
This is usually the very many choices and ideas and of course are the proposed locations chosen by clients. Again, in people their height and body weight can vary considerable.