GGB Plan in quarters, not weeks. Three things drive the date: approvals (licence, Municipality, Civil Defence — each with its own lead time), fit-out (long-lead equipment and inspection-ready construction), and people (hiring, visas and training on the finished premises). The rent clock usually starts before you trade, so the plan that wins is the one where those three streams run in parallel instead of queueing.
From How to Open a Restaurant in Dubai: The Operator's Step-by-Step Guide — the full reading, with the method behind this answer.