Hi there! Ted Baumann here. I've actually stayed at the Garden Route Game Lodge myself, it's really nice. Lovely big fireplaces for the evening meals.
The quickest way to get there from Aghulas would be to take the R319 provincial road north Until you intersect with the N2 highway, Which runs east west. You would make a right turn onto the N2 then go through Swellendam, Heidelberg, and Riversdale, and then you'll pick up the game lodge a bit further on on the left.