There are three main places where you can become a fruitpicker right now.
The first is the Planet Lovenbroy, where you can lend a hand in the grape
harvest. This is a fun pastime, well worth the effort, since the Bacchus wine
and brandy produced on Lovenbroy is treasured all over the Realms for its
superior flavour. You can trade the bottles you get as payment for harvesting
in any of the IGTCs in Outer Space.
The second is some Aegean Islands, where you can pick the grapes and turn them
in for wine, which can be sold to other Traders in the islands.
The third is a small public orchard southeast of Olde Yorke, where 4 different
kinds of fruit trees grow. You will probably have to wait till the right
season for them to ripe however. (This is not yet implemented).
Apart from these options you can find some stray fruit trees or berry bushes
all over the Realms. Exotic fruits, like oranges and apricots, naturally
only can be found in the Mediterranean countries.