Whenever looking at areas for a regional event many things are taken into account. Some might include what the HL product line will be for the year; what benefits or challenges might be presented by a given area; where people might be willing to travel among other considerations. Dates are always challenging - can't come up with a date that works for everyone, unfortunately. In the case of NO, the first half of June is about as late as you can go before it turns into a sauna.