A full immersion larp aims to create a setting in which you can feel like you are really there in a scene, it means the feeling you get when roleplay flows naturally and you really, truly feel like your character. In a full immersion larp, you are in character for all of the game. You eat, hang out, get bored, and talk all in character.
Many larps frequently go in and out of character with handsignals — often a closed fist atop the head. But in a full immersion larp, going out of game for minor clarifications is frowned on. If you don’t know the answer, just make it up. If needed though, there is an off-game area where players can go when they need a break, before stepping back into the action.
The game scenography strives for realism, something called 360 illusion. So a bouquet of flowers is represented by a bouquet of flowers, and not a card with “flowers” written on it, and so on. Part of the idea is that pretending a card is really a bouquet of flowers on it takes one out of the game world and inhibits immersion.