Is it permissible for an airline company to overlook the excess weight of some passengers – without charge – to encourage them to fly with it and attract them as customers?

Regarding overlooked overweight: - If it is with the knowledge and permission of the company and they consider it a way to attract passengers, then there is no objection. - If it is a personal initiative from you without their knowledge and permission, then do not do it, because you do not have the right to overlook the right of others.

Regarding inexpensive promotional items (such as notebooks, calendars, and cup holders) that companies distribute to everyone: - You can take them. - If you are specifically singled out for them, or if they are of significant value: do not take them; because they are a form of bribery. The same applies to valuable gifts, such as discounts; do not accept them. - The criterion for this is: consider whether, if you were not in this position and were not an official in the company, they would have given you the gift and the discount or not.