Master Gardener: What to do about too much fruit; how to avoid bitter cucumbers

Q: My 5 variety apple tree has already set a LOT of fruit, with many apples at the same place, and mostly at the end of the branches. I pruned this tree way back in February as I am trying to keep it within picking reach. My question is, should I snip off most of the excess apples, leaving about two per bud area, or let them drop on their own?
Q: My peach and plum trees have finished blooming and I’ve never seen them with this much fruit before. I know that I will need to thin the fru