Dexter was very nice however I requested noon until 7:00 pm and I was told upon my arrival and confirm pick up that he could not do the hours I requested. I had to go 10:30 am until 5:30 pm. If I had of known he could not do the hours I requested I would have chosen a different tour. Again Dexter is nice and full of knowledge.
Dexter was totally awesome. Very knowledgeable of all the venues we visited as well as best times for being there. With a 12 year old along he was also very patient and accommodating with her gastronomic requirements. All of us thoroughly enjoyed him and his expertise in navigating through and around D.C.
Doing this tour with Dexter was definitely a good idea! He knows a lot about Washington and he only spoke as much or as little as required. Note that usually he does not accompany you inside the monuments, but will leave you in one place and then collect you later. This said, he gives a full explanation beforehand, so you get the right context. This tour is perfect for people who want maximum freedom of choice, yet prefer to have a guide and driver.