Visit Odell at some point while you are in Fort Collins, this is where Jenn works! Odell is the oldest and largest independent craft brewery in the state of Colorado. Let the Taproom know that you are in town for Jenn & Cyril's wedding -- they'll take good care of you! We will make a group trip here at some point after the wedding if you are still in town.
You HAVE to drive up the Poudre Canyon and experience the beauty of our big backyard while you are in town. Fort Collins has amazing city life, but we are so lucky to have the wild Poudre River, Horsetooth Reservoir, and Rocky Mountain National Park so close and accessible. The drive to the Mish is a must, and you can plan your day around it. Once you are at the Mishawaka, ask for a seat on the patio...it rests on the river and you can enjoy lunch and a view! There are also concerts (typically indie, bluegrass, and wild techno) weekly at the Mish's outdoor venue if that is more your vibe.
Old Town Square is the hub of Fort Collins. Park anywhere on the street or utilize one of the three garages and take a walk! You will find dozens of restaurants, bars, shops, breweries, and coffee roasters all within walking distance.