That is after the fuel pump. You will not be able to siphon it from there. You may be able to disconnect one of the fuel lines, like the one at the filter and turn the key to the on position and the pump may pump it out for you. I am not sure I never tried this.
When you first turn the key to on without starting it after it has been sitting over night you can hear the fuel pump build up pressure and then shut off if you listen carefully with the door open.
I would not drill the tank!!! You will compromise the tank integrity and the chances of you getting it sealed 100% again I think are slim. The first place it is going to fail in the case of a crash is where you drilled and patched it.
I have dropped fuel tanks from 2 different vehicles in the last 3 years, 2000 tahoe and 99 grand am. I have not done it on a 4Runner thou. It really doesn't look that hard. There is a large metal skid plate under the tank connected to the frame in various places by bolts. This will take 2 people and a floor jack with a large board to help you lower it down. After you remove the skid plate there are probably between 2-4 2" metal straps holding the tank in place. With say a 2ft x 3ft board under the tank supporting it with the jack or 2, remove the straps they are usually held in by bolts to the frame. Slowly lower the tank a couple inches (you will have to steady it by hand) and look for the electrical connector to the pump and fuel lines, there should be at least 3 lines (feedline, return line, and one to the vapor canister which is part of the emmissions system. The fuel lines on newer vehicles are usual held on by some sort of quick disconnect with tabs that will have to be depressed to pull them free. You will also need to disconnect the filler hose also. It is usually held on by a hose clamp of sorts. After disconnecting everything slowly lower the tank while looking for any connection you may have missed. It may not lower straight down. You may have to jockey it side to side or front to back. Do everything slowly and take your time. Once it is down there may be a locking collar holding the fuel pump into the tank. You will have to figure out how to remove it.
Pull the pump and figure out how you need to drain the tank. There should be a big opening with the pump removed.
These are just general instructions. It is more time consuming than difficult. This is probably the best option if you really feel the need to drain it.
Good luck