If it's any reassurance, I find it a lot more difficult playing to an intimate crowd of 50, where individual contact with each person is essential and where knowledge and appreciation of the music may be high, to playing to a crowd of 1500!

Just try to enjoy yourself as usual, this will be infectious and the crowd will pick it up as well. A lttle feeling of adrenalin is normal and also essential for best performance.

All the best and good luck!

mcmoo