Place rice in a strainer and rinse thoroughly with cool water, then transfer to a large bowl that will fit in your fridge.
Bring 6 cups of water almost to a boil, you want it very warm, to hot, to soften the rice easier, but not boiling, then pour on the rice. Drop in 2 cinnamon sticks and allow it to cool, then cover and place in the fridge for at least 4 hours or overnight.
Prepare strawberry puree by blending strawberries sugar and lemon juice on high until very smooth.
Pour into a large jar and store in the fridge until ready to use.
In 2 batches blend the rice water, along with cinnamon sticks, on high speed in a blender for about 4 minutes. Strain very well with a fine mesh strainer or nut milk bag into a large pitcher.
Pour sweetened condensed milk, evaporated milk and vanilla extract to the pitcher and stir well to dissolve and combine.
Pour strawberry puree in and stir well, then serve over ice.