Thanks Michael.
Actually it was neither - plenty of tape left (I still have to do the other side) and also as you can see there is still plenty of Colonial White left - the uncovered bands / parts of the car are part of the design, the spacing was quite important (also between the tripes, some are touching, others have just a mm or two, then others 5 or more mm).
I think all in all we bought about $200 worth of vinyl striping, that is guaranteed to last about 7 years depending on amount of UV etc. So it's not an expensive or very time-consuming way to spruce up a car, particularly when compared to applying stripes by spray painting.
She may decide to add stripes to the roof/hood/rear hatch later.
It is also easy to remove if so desired.