Many flight travelers need to pay extra charges if they prefer to reserve seats. However, the charges sometimes are higher than usual. Nevertheless, if any passenger wants to get a particular seat than the traveler have ty pay the applicable charges for that selected seat.
But, if you likely do not want to pay any other extra charges, then there are also a way. But, that doesn't mean you won't get a seat in the flight. You surely will get the seat in the flight but with a few terms and conditions. However, if you likely to get a seat beside the window or aisle, then seat selection process is important.
The airline will assign you a random seat before departure.
Yes. It is okay until you get bothered by sitting in the middle seat.
Yes. Airlines do charge extra money for seat reservation. It will depend on the type of your seat and destination.
The airline will assign you a seat during the check-in process or at the gate if you don't reserve seats.
Yes. Airlines will give you random seats.