MacBook Pro won't power on after SMC reset
Your problem is likely a hardware problem, and is probably a short. Unless you disassembled the computer before using the rice method, it probably didn't help and you just ended up with a bunch of rice in the trash can. Also (and this is general advice for everyone), the first thing you should do in a situation like this is IMMEDIATELY disconnect all power to the computer, including removing the battery. Failure to do this will keep power going to the machine and dramatically increase the likelihood of a short. 

Hardware failures do not necessarily happen all at once, and may not show up for a day or more. It sounds like this is what has probably happened to you. At the risk of being the bearer of more bad news by adding insult to injury, this type of damage also is not covered by Apple Care. Sorry you have to deal with this; best of luck to you in getting your machine back in order!