I *think* there's only one slide at YC, but we don't use the pools, so can't say for sure.
The IG entrance is the same as any other, with bag checks and ticketed entrances. You'll enter near UK, turning left into WS. Up a hill and right turn to the bridge toward France, or straight ahead through UK and Canada.
If you enter before WS is open, you'll be directed along the UK/Canada route by CMs to FW.