The groom and the groomsmen can all have the same expressive style by wearing a linen Mexican wedding shirt or a linen Guayaberas shirt in a different color. Coordinate them with a pair of linen Capri shorts and have the groom wear a pair of drawstring linen pants so he can stand out . The ring bearer can too wear the same style, giving the wedding party a complete color coordinated formation attire.
Selecting the groomsmen attire is a matter of color coordinating them with the bridesmaids dress color. You can select one color or create a more tropical fun expression by using different colors. Guayabera or Mexican wedding shirts with drawstring linen pants.