There will be
- Rules you think are unfair and unnecessary but have to follow
- Adults who treat you like a child, but expect you to act like a grownup
- Activities you have to participate in that you would prefer not to
- Students you have to spend time with that you might not get along with
- Days you are in a bad mood but have to put on a smile (because people in your family and friends back home know that you are having a bad day, while in your host country they will get a bad impression)
- Moments you feel verbally handicapped (you don't get their jokes, they don't get yours, feelings you can't fully express)
- People who will constantly judge you based on the very little they know about you
- Chores and responsibilities you are not used to having, like doing dishes every day
- Weekends you have to stay home because you ran out of money or don't have a ride (not allowed to drive)
- Marks that go down because of language issues
- Peers that will make fun of your accent, appearance and culture
- Days you want to be alone but don't get any privacy and days you feel alone but don't have any company
- Courses you dislike but have to take
Despite the "downs", if you are lucky enough to get an opportunity like this, take it :)