The number of years here moulded me, so that I ended up weathering the big and small storms.
Basic stuff to watch out for here, is (good and spacious. you and/or your family will spend a lot of time indoors) housing hopefully supplied by the employer, full paid or subsidised utilities and school fees for those with kids (6-19). Then you have set your targets on how much you need to save, add the daily expenses hopefully without those above. With similar package, you will certainly save more in Riyadh than in Dubai, but then life styles are so very different.
In regard to the job, well, it's like everywhere else. There will be ups and downs. Don't let them expose you to safety/security neglect and you should be alright. This is why a good HOME is important after a bad day in the "office" flying the machine or the desk.
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And try to visit the place if you can to see what's in waiting for you...