Dear Luigi, greetings of the day. As we all in Nairobi know that is the rainy season and as per our driver guide he also mentioned that you were worried about the rain. However, you did feed the giraffes twice as there were not many people and the giraffes were very cooperative. You also entered the museum (conference rooms) and he explained about the giraffes to you. The only place you didn't visit is the trail because it was slippery and we would not have wanted any injuries. the tour take 3 hour from pick up to attraction and back to your hotel. the transit time on that day took only 30minutes because there was no traffic, had there been traffic it would have take 1 hour and half one way. In addition, because of experience our drivers know how to avoid traffic and certain times. some hotel are also very far thus we give a general timing off-peak.
In conclusion, we did offer the service. what am not sure is why you say you didn't feed the giraffes whereas you did feed them at least twice and took pictures, WHY?