Trouble is with fruit is getting to the weeds to pull them. Woody fruit bush centres and shallow rooted raspberry rows are a nightmare once perennial weeds get into them.
DHM talked about missing a weekend and having a weed jungle to come back to. I hear you
Annual weeds are easily put off by mulch, but not the underground invaders. Leave them a week and they will be several feet long, with even more under the surface.
If you are buying fruit to put in, I still think it is worth clearing the ground first, however you want to do it. My fruit is now on my small piece of plot, which was bindweed central, plus thistles, nettles, docks ... you get the picture. For the first few years I used a lot of big veg that could cope with weeds, membrane, cardboard, deep mulches, plus some digging and weeding. It worked a treat. My new fruit patch is a few years old now, deep mulched and pretty easy to keep in order