LC 100 Recall

Our LC was in the VIN number recall for a perceived problem with the brake rotars.
First off it appears that the only problem to date occurred overseas somewhere but because it could be a safety issue Toyota is erring on the side of caution.
Went to book it in and was given 8.00am today. Arrived at designated time to be told that they would want the vehicle until 4.00pm. My sources had already told me that it was a less than 3hours job so I asked why they would want 8hours. The answer 'we schedule recalls for all day but most times we fit the work in during the afternoon after we have done the normal "work" ' Quality Service???
Needless to say I have been using my vehicle this morning and only delivered it to the workshop at 12.45pm. Have been assured that it will be ready by 4.00pm
Incidentally I have put some small 'security' marks on the rotars so I will be able to tell if they have been touched. Being a trusting sole I also mark all filters with date etc after every service so not changing during service is not an option.

Kevin