Things like religion. Even before arriving in Indonesia, I knew I would be here for the entire month of Ramadan (a holy month in Islam) and I was super excited, but very unsure of what to expect. As it turns out, Ramadan in Indonesia is not much different from Ramadan in New Jersey or Pennsylvania. In fact, it may actually be easier. Throughout my studies and experiences with Muslims of different sects and lifestyles, I have found that Ramadan, at its very core, is ALWAYS the same: you wake up to eat suhoor (the morning meal eaten before sunrise) and then you pray and go back to sleep. At magrib time, you break your fast with traditional Ramadan foods like dates and tea.
I have always found Ramadan easier when I am busy. When I first started fasting as an eight year old, Ramadan was in January which is, in my opinion, the perfect time for young children to start fasting (applicable to children in the Northeast US at least) because the days (sunrise to sunset) are super short. I would eat suhoor an hour before school and break my fast about an hour after school, and I had school to keep me busy during the day.
Right now in New Jersey, sunrise is around 4:00 and sunset around 8:30; in Yogyakarta, sunrise is around 4:30 am and sunset around 5:35 pm. It is a lot better than Jersey by the accounts of my friends. There are also cultural differences in prayer; some Islamic groups pray tarawih (extra prayers done only during Ramadan after Isha prayer) as two sets of 4 and one set of 3 whereas in the US (and other Islamic groups in Indonesia) pray it as 6 sets of 2 and then 1. (The numbers refer to rakats, each rakat is one complete up and down cycle when praying–its a little difficult to explain, but maybe the images below can help clarify.)
(ignoring the words) one full rakat starts with the second image, with the hands folded across the chest, moves to the hands-on-knees position, back to an upright position, then to a forehead-to-the-ground position, then sitting back with legs folded under you, and back to forehead-to-the-ground position.