Latest UAE visa on arrival rule:
Countries which get visa on arrival are granted 30-day multiple entry visa and 10 days grace period. Travelling for visa renewal by air/road/sea should be done in grace period ONLY. If exited and re-entered within 30 days visas will NOT be renewed.
This rule does not apply if changing status from resident to tourist and vice versa.
Best Visa Run is only responsible for transportation. Rules are subject to change by UAE government.