Dear K. Art,
Per below email, it’s clearly that US embassy and US bands do not understand about Ford booth and USA Fair event.
Per the below list of AV request, please check with Ford what they can provide.
Of course, Ford cannot provide drum set. Please check the rental cost of drum set and other instrument, if necessary then reply all parties the extra charge would be happened then they (AMCHAM and Embassy) will definitely consider the extra cost for these 2 bands.