Bodacia - Go for the Emirtaes DEC - it's a no brainer. Conditions are far superior. As you know there are no DEC positions in Fludubai now and all promotions are upgrades. Flydubai have reduced the remaining number of 737s on order and this year there will only be a net gain of approx 3 or 4 aircraft. So no point in joining as an FO with a hope of quick upgrade as it is done on seniority. There won't be that many upgrades this year which is going to upset a lot of FOs. The company has held an emergency meeting to discuss the large amount of pilot resignations. Don't know what was reviewed, but there's been no mention of any pay increase this year, and there's been no increase in transport allowance, education allowance or housing allowance for a number of years.
Now pilots feel trapped in the company. Bad enough a $24,000 bond for three years (even for type rated pilots), although every pilot accepted this when starting, but now they have an agreement with Emirates to stop pilots joining ER until they've been at FZ for three years.
They must be so scared about pilots wanting to leave.
Maybe the "grown up way" and professional way would be to consider the conditions and improve them. Though some things won't change.
Make your decision, but I wouldn't cancel that interview with ER!