Client changes and being flexible

So I was bartending an event for a very important client this weekend.  During the week leading up to the event there were multiple changes the client made as to bar location and guest count.   The bar was originally to be set up in a rented area outside.  Then I was told we would use the inside home bar.   Then was asked to bring my portable to make a second bar station.   

When I arrived I set up the portable then discovered another bartender was brought in to help who wasn't my staff.  

I created a cocktail program based on original information for guest count and menu items.  

The bottled water and club soda were not supplied until 2 hours into the event which was a difficult situation to pacify. 

The challenge:   Split supplies based on a one bar set up and smaller guest count between the 2 stations, then bring the surprise bartender up to speed on the drinks menu, recipes and determine what could and couldn't be made at the smaller second station, and manage my bar assistant and the new guy.  As well as keep the guests and host happy and worry free.  I was not very aware of the type of crowd ( wine drinkers, shots crowd, etc).  Nor did I know the alcohol preferences so that put me a little disadvantaged. 

The night went well.  Although I feel it was a bit rocky at the start.  The guests all seemed to enjoy themselves and the drinks.  My assessment: a mixed crowed of wine enthusiasts, high end old school drinkers.( manhatten, vodka and club) with the usual mixed drink people of fruity sweet enthusiasts. I felt that I couldn't deliver the 120% I strive to give.  With the challenges presented I felt I delivered 90-94% which I feel was not good enough for theses clients. They truly deserved the best a+ game I can deliver but I feel I was just and A.    

I think realistically it's more of needed better communications on my end.  Ask more questions and be more proactive in clarifying the client wants.  I could then have provided a supplies list to prevent lack of supplies.