@Nutella: Yes, the Trees of Prosperity come with Lunar Lakes. They are very nice to have. Congratulations on being able to make all the happiness points without them!
My biggest trick to get the happiness points was gardening. I had all my clones take gardening class, then the next day after they age up to YA i have them join the gardening career. Then I would sell $30 worth of produce (harvest from SV), get them up to career level 2. Most of the time you will get the wish to level gardening skill, worth about 1000 points. Then sell more product for the 2nd level $75 worth of produce, then get more improve gardening skill wish. The main part was where you get to the point of the reach gardening career level 5, which is worth 1500 points - i just sell the deathfish book i harvested.
The main thing here is make sure alll your clones have the gardening career before doing that, since selling one set of produce works for the whole family.
My guitar sim was also feeding and harvesting the omni plant by science center everyday. Some days no harvest, and at the 2nd week, somehow a wild horse ate that omni plant ... luckily i had enough books stored in my family inventory lol.
As for cooking, if you dont' have oven in your house, take a cooking class -- the buy an oven wish will always pop up. Buy the oven get the points, then sell it. Also prepare a meal wish will pop up too. And sometimes when you go prepare a meal, you will get the improve cooking skill wish.
For fishing, go fish in park with no bait. Soon you will get the "find out minnow bait" or "find out goldfish bait" wish pops up.
For logic, if you take a class in logic, you will always get buy a telescope or buy a chess table or buy a chemistry station wish. Fulfilling those is easy. Also sometimes when you sit on the chess table, you will get improve logic skill wish.
For sculpting, after you get skill 1, make sure you watch the leveling bar. When you are close to leveling, stop him and go do something else, like play chess and stuff. Sooner or later the improve sculpting skill wish will appear and then you can go back to leveling sculpting.