how big are they? they must be 12in. in diameter to put one tap in. if you have larger maples, 2-3 taps can be applied per tree... and really... if you had 4-6 taps between 2 trees and it was a good season.... each tap can damn near put off 3-5 gal per day. i had one tree in my backyard this year do 11 gal in 24 hours on just gravity drip with 2 taps (gravity=no pump, some people pump the sap out of the trees but i feel it is unnecessary stress on the tree). takes about 30 gal of sap to make a gal of syrup. so with 6 taps on a good year, you can easily do a couple gallons of syrup. it really doesn't cost a lot of money either. time is the biggest cost. but that's the labor of love!
oh yeah, i've been making my own soda with maple syrup.
step 1: buy seltzer water with 0 additives (or if you have a way of carbonating water go for it!)
step 2: obtain maple syrup
step 3: 2 tbsp maple syrup in a pint glass
step 4: pour in half a can of seltzer water, stir up the seltzer and syrup, then add the other half of the can.
DONE. tastes like cream soda almost, but still mapley. I also use maple syrup as a sugar substitute for anything, especially coffee