For the McTony Robbery, you have two mandatory and one optional task.
Task 1: Cutting Torch
In this task, you must steal a cutting torch from the marked location.
You will be asked to find the cutting torch in a highlighted area when you get to the location. It can be a bit tricky to locate it.
We found the cutting torch on top of an electrical switch. It took us some time to find it because of the snow introduced in the December update of GTA Online for Christmas.
Another confirmed location where you can find the cutting torch is on top of the cement bags under the shade in the highlighted area.
Once you've acquired the cutting torch, return to the salvage yard to complete this task.
Task 2: Security Outfits
This task has a random location as well. You can either get the Del Perro Pier at Vespucci Beach or the Chumash Pier. We got the Chumash Pier.
When you get to the pier, you will be asked to locate and steal the security outfits.
The security outfits are inside a crate that will be on the ground around the perimeter of the pier. Check for a crate by the walls and the fence railing at the pier.
Steal the security outfits and return to the Salvage Yard to complete this task.
Task 3: Masks (Optional)
This is a completely optional mission and won't affect your heist in any way. However, if you'd still like to complete it, you can.
You must go to the Vespucci Beach mask shop and purchase any mask set.
Once you've purchased a mask set for the final robbery, your task will be registered as completed.
With these initial tasks completed, you are now ready to proceed to the more involved Planning Work missions.