The Maximum instrumentation is 3/3/3/3, 4/4/3/1, 1 Kettledrum, 3 Percussion, 1 Harp,
14/12/10/8/6 (woodwind instruments incl. additional instruments) - vocal forces are not allowed.
Yes and you could probably add alternatives like alto flute, cor anglais, bass clarinet and double bassoon- usually the 3rd woodwind player would take care of those.My guess would be that it means that some players would be required to double instruments. For example, one or more of the 3 flautists might double piccolo.