do I have to drain the water and oil first before I remove the freeze plug
That refrigerant oil
It is on the clamp bracket and also on the motor it looks like a freeze plug where it is stamped on the motor
Punch it in then pull it out with whatever means.
Locate the bad freeze plug and remove parts that impede the facilitation of reaching the plug. Take a screwdriver and hammer out the old plug. Replace the plug with either a regular plug (a socket that fits the inside of the freeze plug helps) or a rubber expanding freeze plug.
Remove whatever parts necessary to gain access to the plug then knock the plug inside the block, turn the plug sideways then pull it out.
Pull the old freeze plug, clean up the hole, press in a replacment. Unfortunately you may need to remove a lot of peripheral stuff to get to the freeze plug.
It is on the clamp bracket and also on the motor it looks like a freeze plug where it is stamped on the motor
You have to remove the engine and get freeze plugs pressed in. If you use a rubber plug which have a brass face and bolt in. Remember that they are a temporary fix and will come out if your engine over pressureizes.
First check and see if there is a pouch located directly beside your battery. If there is a pouch it will contain a plug that is for the factory engine block heater. If there is no plug then you can pursue an aftermarket type. There are several types. If you want to use a freeze plug block heater, you'll need to have someone help you remove a freeze plug. That usually requires that you remove a lot of the peripheral equipment until you can get a clear access to one of the freeze plugs. Measure the freeze plug then go to an auto parts store and purchase a freeze plug block heater of that specific size. Once you have one that will fit into the hole, you can drill a hole in the freeze plug, then use a prying instrument to remove the old freeze plug. The block heater freeze plug usually goes in with a nut to tighten the freeze plug into the hole. BTW, you'll get a lot of antifreeze all over when you do this, and plan on taking your time since it will be time consuming.
the port side clamp bracket or the freeze plug on motor
Remove passenger side fan that is attached to the radiator. Drain freon out of system. Remove electrial plug on compressor. Remove bolt that is located between the two hoses on an aluminum block attached to compressor. Remove the serpentine belt. Remove the 4 bolts that are located on the radiator side of the compressor. You now have it off but be careful not to damage the radiator when lifting it out.