Steps:
1. Walk in the room
2. Step on pressure plate (2 blocks go down, revealing dispenser and switch)
3. Flip switch (Ignites fireplace, brings up table &chairs, reveals fireplace, dispenses cake)
4. Place cake.

To turn off:
1. Step on pressure plate
2. Flip switch (puts everything back, dispenses water, puts out fire)

Thanks for taking a look at my submission :)