Hi , just a quick one, my mum and dad are coming in from dublin via doha however they get greatly reduced price tickets as due to family working for airline. my question is with Irish EU passports for less than 30 days and visa waver, do they need to show return tickets at immigration, problem is these special tickets are standby and are only usually issued a few days before return flight. they have not had any entry's here for 1.5years and as they are quite elderly I want to be sure there is no issues

thx