A tram ride does still take you inside Grant's Farm. There have been many animals added to the tram tour and the inside of Grant's Farm. There are stables at the Biergarten which house horses to enjoy however, it is not the Clydesdales. They're housed in a seperate barn on the far side of the parking lot. Many animals to feed so bring cash!
They no longer offer tours of the Hardscrabble cabin. That said, the standard park experience runs roughly as follows: Enter the park - tram ride through the Deer Park - Disembark to main attractions - Exit park through dining area/carriage house. They also still have the Clydesdale Stables on the main parking lot. Hope that answers your questions!
You have to take the tram. You pass by the original house. But now, if you want to see the barn or the horses stable, you have to purchase an additional pass.
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