When you are receiving a full body massage,  do you prefer to be partly clothed or fully nude? ?

Fully nude.                 

There is not a big difference between the two because the difference between partly clothed and fully nude in that situation is just a pair of underwear bottoms. Also, when you go fully nude, you're not lying naked on a slab. You undress when the masseuse is out of the room, climb on the table and cover yourself with a towel you've been given. Modesty is always preserved. The masseuse just moves the towel by folding it back to expose covered areas that are part of the massage, like the upper legs. A full-body massage does not include the buttocks or the genitals, so you are never exposed. Anything that does include those and does expose those is not actually a full-body massage by an actual masseuse but is a rub-and-tug by a prostitute you've hired for that purpose under the auspices of it being a massage to try and avoid getting arrested for soliciting prostitution. 

I think it would depend on who is doing the massage.