Hi Kelsey,
Congrats! I, too, am a Colorado bride and decided between Cabo and Playa for our wedding. If you're thinking July, Cabo will probably be a safer bet to avoid hurricane season (though you can never really predict the weather!). Since we plan to get married in mid-November, we're looking at Playa instead. However, if most of your guests are coming from Colorado - Cabo is an easy direct flight on more than one airline which is another bonus!
Don't stress! You will find a wealth of support on this forum!