You didn't post anything that'll get you banned or muted so the feedback is plenty welcome.
I'm curious as to how many of the past King's Quest / Space Quest type games you've played. The "click to walk" control scheme has been around for a while in this type of game, so most of us were expecting this and for the most part it works as well as it did in the older games. A bit dodgy with the camera now and then and sometimes he has issues with corners, but I have students who have more trouble not running into things than Graham.
The fact that you didn't know what to do after the game started makes me assume that you haven't played King's Quest 6 at least, since most of us who have immediately set about exploring the castle. Exploration and interaction are the main staples of the King's Quest games, having your hand held and being coached from place to place are not.
Were there specific voice actors you did like (or did not like) more or less than others, and why? What specifically about them bothered you, the voices themselves or just the wording?