I gotta say, getting crude oil is really annoying and hard. Both the accumulator and reservoir need to be placed on land, and the only alternate way to supply energy is placing water power plants on the coast. Its really helpful to have windmills directly supplying your energy buildings to save the cost of cables
If you drink too much tea (and 5 cups is too much), the butler starts giviing you 'the good stuff' wich costs 10 instead of 3 but still gives you 3 happiess...