Headover to the Eagle Eye Website located at www.eagleeyeadventures.com and click on "book your adventure".
Choose the type of tour you'd like to go on, select which dates you'd like to go on the tour, click "book tour", a pop up will appear, then choose the number of guests, and then click the "continue button".
Here you will create your booking, this step will ask for a number of details such as your name, contact information, and any food allergies you may be sensitive to.
Head on over to your email inbox and locate the email that you were sent from the person who sent you the gift certificate. You will find a PDF attached to this email, here you will find the gift certificate which contains a barcode, copy this barcode number and head back to the Eagle Eye Website.
Click on the "Gift Certificate" button found at the top left corner of the Payment page, a pop up will appear, you will then enter the dollar value of the gift card with the corresponding gift card code that you copied from the previous step. Once you've pasted the code into the popup click on "Apply", and finish the checkout steps.