To sum up some likes and dislikes:
Mana likes Turnips and Clover, can also bring Her a Salmon,
Douglas likes Bull Horns,
The Doctor doesn't like strawberries,
Tanya likes Apples,
Dorothy likes Char, can catch it in Summer zone river stream, dislikes Insect Skin,
Cammy likes Strawberries,
Rosalind likes Clover and vegetables are also good, dislikes Gyoza,
Egan likes white Cabbage,
Mayor likes fish,
Julia likes flowers,
Max likes scarf,
Cecilia likes precious gemstones,
Yue likes Daikon Radish, already have it growing in the Winter caves.
Have some sown in the Spring zone, watering required.
Giving gifts everyday will strengthen relationships faster, even more so on birthdays and festivals.
Once the rain starts all the fields are watered, it's less work for everyone.
And My Goblins will still be watering though, every evening, every day, any day.