We were just there at christmas, we just stopped for literally 5 minutes to do the Haunted House.
No the Huge slide is not there anymore, that was connected the play center, "YELLOW SUBMARINE" which is gone, gosh that brings back memeroies, when we lived there i used to take DD AND DS there who are now in college!
There are several rides on the far end of OT that will suck you way dry of money and not worth the time money or wait.
There are alot of shops, but the shops and atmosphere are better at DTD!
If you want soemthing really NON Disney to do and it is VERY cute and slow and enjoyable, there is a small out of the way place on I drive, across from WONDERWORKS, called Train land International, (adress 8990 I drive), we went at Christmas, i thought it was going to be really Lame, i loved it!