No water on my plot (1/4 Acre). I honestly find - even living in a renowned drought area - that most veggies and fruit do well. I don't pamper anything and with a plot this big I couldn't possible contemplate watering.
I do add manure or compost or newspaper to 'hungry' plants such as in potato trenches, runner bean trenches, when I plant squash or courgettes. I use things to cover the ground - like around courgette plants I use grass cuttings from home, cardboard etc anything that can keep the water in - not black plastic - the slugs love that - but the plastic is fine if you are not going t use the ground and need to kill weeds and to keep it weed free until you need it.
All fruit bushes seem to flourish, red, white, black currants, gooseberries, jostaberries, loganberries, blackberries, - even rhubarb with 'muck' in the planting hole then some muck or compost around the plants and some again over winter or early spring.
I do have an old open tank that collects water from my old little pig shed - but it is only used very occasionally - if the runner beans struggle now and them, and if they are not pollinating in the dry heat.
So - go for it - I did. Each year anyway on a plot you get successes and 'let downs' and it differs every year - but I always get enough to feed us most of the year.
Last year my spuds were a bit small - but we still stored them and eat them - even the marble sized ones just get washed and boiled with their skins on - and taste wonderful mashed or fried on in stews etc.