Long flights can be very, very boring. You will want to have plenty of ways to entertain yourself. Bring along a book you’ve been wanting to read, pack music to listen to (through headphones), or pack a tablet or laptop computer to watch movies on.  Many long-haul flights also offer in-flight movies, which is great, but you shouldn’t count on this as it may not always be the case. Have a back up plan. Try to get a bit of sleep. For many, sleeping on an airplane is next to impossible, but if you can, try to get a few hours of sleep. This will pass the time, and help you get a little bit of rest before you reach your destination. If you are on a long-haul flight (e.g. a flight overseas) or one where you will fly through the night, recline your seat a bit. While many consider this to be rude behavior, you will find that most people do recline their seat on long flights. However, try to be courteous when doing so, only recline as far back as you need to get comfortable, and glance behind you to see who is sitting there before doing so. If someone that is very tall is already scrunched into the seat behind you, don’t recline the seat and make it even more uncomfortable for them. Even if you are not planning to sleep, bringing along a travel pillow can help make you a bit more comfortable on a long flight. If you don’t use it to rest your head, you can place it behind your back or even sit on it to provide a bit more support. While you will likely be offered food on your flight, this food is usually not very tasty or healthy. Oranges, bananas, watermelon, and whole wheat bread are all reported to be helpful for people suffering from menstrual symptoms. Cut up the watermelon and put it in a sealable plastic container, or just throw an orange or banana in your bag. Not only are these foods healthier, they will help soothe your discomfort. Don’t forget to pack yourself a treat. Part of getting through a painful period is allowing yourself a treat. In this case, you might consider packing a bit of your favorite candy...

How would you rephrase that briefly using Indonesian?
Sibukkan diri Anda. Mundurkan sandaran kursi Anda. Bawa bantal kecil untuk bepergian. Bawa camilan secukupnya. Minumlah teh atau kopi. Gunakan perban bersuhu panas.