Hi mag,
What we did was we bought the coach and accomodation package to CH with Alisan in Golden Mile. We arrived at Equatorial Hotel around 8am.
The coach will stop at Tapah toll where you alight and wait for a transfer (by another coach / minibus) that brings you directly up the Equatorial Hotel.
(They also drop guests staying at other hotels like Strawberry Park on the return trip down from Equatorial Hotel.)
(Several other coach operators - I believe Gunung Raya, Four Stars, etc. also offer the packages but their transfer coach may be at KL instead of at Tapah toll)
At Tanah Rata, a local tour operator will come aboard and introduce their day tours around CH.
If you are undecided about the tours, don't be pressurized to book on the spot. There's a tour desk at the hotel for you to make bookings as well. Although different operators, the trips are all similar.
We took the Nature Tour which brings us to the Boh Tea plantation, Gunung Brinchang summit,the Mossy Forest, Orang Asli Village (don't expect too much, it's all modernise and nothing to see) and a waterfall in Tanah Rata. Forget about the farm tour, you can move around Kea Farm by yourselves on foot. In fact, we did our Kea Farm tour on the 1st morning and later in the afternoon, walked all the way down to Tanah Rata (making stops at nurseries and farms along the way) for dinner and the Pasar Malam which is there on weekends. Back, we took a cab.
Our 1/2 day Nature Tour on the 2nd morning starts at 9am and ends around 1pm. If you are staying only for one night, you will not be able to join any tours on the 2nd morning as the departure home is late morning.
Hope this helps.