In case you have to fly SRS should you by a ''flexible'' ticket or standard? Flexuble ticket usually cost many times as much as standard.
I'd go with standard, just make sure you are there long enough. I've seen people change tickets and end up paying twice what they were in the first place.
Many years ago I flew with a return ticket. After I was released from hospital I planned to hang around for a week and enjoy the country but a minor medical problem developed and I didn't have enough money to go back to hospital. I phoned the airline and they got me on the next available flight - that was nice of them! (But that was 35 years ago so I wouldn't count on that kind of service now.)