Given a travel related situation, and given a specific question about the situation, summarize the question into a title

[EX Q]: I have a refundable ticket taking me from 'A' -> 'B' and then 'C' -> 'A'. However, I have now made further plans, so that I do not need the C -> A ticket anymore. So, given the limited travel budget that I have, I'd like to have the return / final leg of journey refunded.

The cost of the total flight was less than the one-way tickets from A -> B would be now, so it does not make sense for me to cancel the entire itinerary. I'd like to travel on the first leg, and have the second leg refunded if possible.

p.s. I am not getting off at any layover. The flights from A->B and C->A are more than 15 days apart and I have my own ways of traveling from B->C independent of the airline.

[EX A]: Can I have the final leg of a multi-city flight refunded?

[EX Q]: I'm planing a trip between many countries in Asia. I'm not sure if it is safe carry two passports of different countries. Of course both are valid and legal.

I'm scared to travel in poor countries with a high level of corruption and have a problem with stupid things.

If a have to choose between a Brazilian or a Portuguese which one is better?

[EX A]: Travel with more than one passport

[EX Q]: In a few days, I will be traveling alone from London Heathrow to King's Cross station at about 1am via night bus. I have read a lot of conflicting information on the safety of night buses, and I have begun to alarm myself.

Is lugging a rather large suit case across most of London at 1 in the morning going to be a safety concern (i.e. is it worth shelling out a rather large sum of money for a taxi?), or should I be fine?

Is there anything I should know or avoid doing?

[EX A]:
London night bus safety