For your guests (except kids) you can go for the following wedding reception entertainment ideas.
If you are organizing your reception on beach you can hire hula dancers. These will perfectly match with your wedding location and theme. Your guests will love to boogie with them and have a hula-hula.
You can also hire party bands or live music band to bring an interesting and fun filled aura. The party bands do not play a single genre rather they will set a mood, high up the energy and can make your guests dance. According to your choice and specifications you can choose a party band.