Depending on your experience, years of training behind you and your propensity to gain weight. From my 20+ years experience of international competitive running and coaching experience, zero run taper is always a big risk. Most of the runners will get stiff, even lethargic after several days without running, even if starching vigorously. Now, taking a day or two (not on consecutive days) off, might work for masters, but it is never a good idea to disrupt a rhythm of physical activity.
I had run few races after several days off due to complicated travelling and botched up reservations in hotels, and mostly, it was a struggle. Out of a few times I ran really well, it was for unimportant races, where prior tapering was non-existent, thus I had trained hard until 4 days out, and was forced to take last 3 days off (except for a midnight jog day before the race in the hotel garage - it is very difficult to find a running friendly zone in Tokyo at night, if you don't know the city). If I had tried to replicate it few times for more important races, it didn't work.
I say - run at least 4 days out of seven, and make those runs count - run at least some strides, even 3/4 mile to mile at race pace 3/ 4 days before the race, plus plenty of jogging to supplement it. Easy running should not tire you, if you are in good shape. For the final time - it is always better to be 1lb lighter than rested and 2lb heavier.