Would it be safe to have a hemorrhoidectomy at the same time as a tummy tuck?

In most cases, this
would be safe.It does, however, depend
on how extensive the hemorrhoidectomy is and how large or extensive the tummy
tuck is.The postoperative care
necessary for hemorrhoidectomy (possible sitz baths) as well as the
abdominoplasty (early mobility as well as sitting in a slightly flexed
position) must be taken into account as well.Ultimately, there is no substitution for a frank discussion with your
surgeon (or surgeons) who will be doing the procedure.

It may be safe, or you may be able to do both without a complications, but I would not recommend doing so.  You may put yourself at more risk for a wound infection.  Also, the recovery would likely be miserable.  With hemoorrhoidectomies, you usually have to soak your bottom several times a day, but with the abdominoplasty you don't want to have the incision submerged under water.  Finding a comfortable position may be difficult to find, as well.  You should definitely speak with your American Board of Plastic Surgery certified plastic surgeon before doing both together.