SEFG... I did not bring the yoga mat But instead my guitar. Despite the lack of a mat, i still attended yoga classes. It was a nice treat not being the teacher rather the student .
It is always warm in Hawaii. The lowest it gets is 64 and mostly it is in the 80's. The temperature never changes ... the same all year round. When it rains it is warm or even hot.
Food there is way expensive because of the shipping. so that is the greatest expense. On the other hand ... solar energy is easy and water is mostly free unless ya live on the dry side of the island.

eyes