Is there an additional charge to have the reception outside?

Yes.  For the GOLD Package we charge an additional $200.  The added time it takes to haul gear over uneven terrain, running cords through dust and dirt, power concerns, wind, mosquitoes, sun, rain, humidity, heat, cold, cleaning gear afterwards and did I mention mosquitoes warrants the extra fee.  Plus we run the risk of getting soaked an ruining the equipment.  We highly recommend indoor climate controlled events if at all possible.  PLATINUM & DIAMOND Packages are not available outside.