The office of the tour operator has tricky to find but we managed that.
The tour started with Guell park. This part of the tour went very well. The guide was great, patient with the group, and very informative. At the end of the park visit we had a few minutes of a break before the bus arrived to take us to the Sagrada Famillia. Several of the tour participants needed to go to the bathroom before we boarded the bus. For the guys it was fast, as usual for us guys. For the ladies it was horrible. . . long lines, waiting forever, and disgusting conditions once they got to the facilities
Once we were delivered to the proximity of SF we were a little late so had about 10 minutes to check in with the tour guide there ( a different person). The group was divided into 2 groups. One group got the prior guide and we got the new guide. Our group also included several Spanish speaking people so our guide had to repeat everything in Spanish and English. This was a bad experience as his time with either language group was limited so everyone got less information and time to ask questions. Honestly it ruined the experience.
My advice for future visitors is to ensure that you are in a single language group. If we had had this I would have rated the tour better