I'm fortunate in having a wide passthrough between kitchen and dining room - probably should have been a breakfast bar, but I have a large cutting mat on it and use that for sandwiching...tape the backing wrong side up, add batting and top, pin then move the whole thing up to do the next section.
have been wanting to try the wall technique but this one works so well haven't tried the other. The weight of the fabric below will keep the fabric taut. Disadvantage is the possibility that spray adhesive can get on walls and floor - but newspaper taped to wall and to floor can handle that.