Thank you for using Just Answer for your needs. I am glad you asked your question and that you are going to service your own Camry as most people don't. To answer your question, yes, it really is that easy. Just remove the 14mm drain plug and let it all drain out. Then replace the plug and gasket and refill the transmission with 3.1 qts of Toyota Type T-IV transmission fluid (bought from the Dealer) and check the fluid level with the dipstick. Only use Type T-IV fluid as any other fluid or generic one type fits all fluids can cause shifting problems.