Quick wash or full detail what do you guys actually do between seasons?

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I'll be honest, I've been pretty lazy with my car lately and just letting the petrol station guys do a quick spray when the dust gets unbearable, but the other day I noticed some weird water spots that won't come off no matter what. A buddy told me to check out http://www.exoticcarcare.ae/car-wash-abu-dhabi because apparently they do this multi-step hand wash that actually gets the grime out of every crevice without scratching everything up. Now I'm wondering if I should just stick to a regular wash every two weeks or go for a proper decontamination thing once a month. What's your routine here in Abu Dhabi? Do you bother with the fancy stuff or just hose it down and call it a day?