How much training do people usually get after getting into airsoft?

I understand it CAN be a weekend sport where you show up and just shoot stuff. However, there is a park near me that has photos of people holding weapons and moving between cover as if they have had training.

If I were to show up to a spot and use the limited rifle training I've had would I have a disadvantage over someone who can do fancy movements and hold a weapon as if it were real? Does it matter considering you are shooting a pellet with a lightweight gun?