A lot of your experience will have to do with which airline you are flying?

To check the entertainment just about all airlines worth their salt have the full inflight movie guide somewhere on their website - even if just for the next month or so.

A lot of folks like to buy noise cancelling headphones.

Ear plugs (the foam ones that go right in) are very useful, as is an eyemask. Again, depending on which airline (and which class) the eyemask (but rarely earplugs) may be provided. The lower the class, the less you get

Again, depending on which airline the need to take snacks may not be necessary - the asian carriers will provide sandwiches, peanuts, instant pot noodles in economy (more in premium cabins). United also used to have a little snack box mid-way through their very long haul flights in the main cabin. Not sure if it is still there.

Finally - go to seatguru and check your airline and select seats. Some airlines allow you to oay for seats with more legroom or the emergency exits. If you want lots of forweard space then this might be worth your while.

Let us know which airline and class and we'll be able to advise more.

regards

lme ff