I booked this tour as a birthday present for my boyfriend and was really looking forward to a unique and exclusive experience. First of all, all the guides were very nice and knew their facts. Nevertheless, what really clouded the experience was the mere size of the group. For this kind of event I just didn't expect 40 people in a large bus, but as I didn't inquire about the quantity of people in advance, I was shocked when we arrived. Everybody there got maybe one minute of looking through one of three telescopes and the rest was waiting and listening for 2 hours. That's just a bad ratio. As they did English and Spanish and both guides had to speak up in order for everybody to hear, it was exhasuting to follow as is was basically constantly stereo. Also, the whole process felt kind of rushed and I would have liked to ask more questions.
I understand that this business has to be profitable, but I believe putting quantity over quality is never a good choice.
So if you are looking for romantic stargazing, try finding a different company. There are several smaller ones, this is one seems to be the biggest.