From personal experience, any way you look at it, transporting your guests from point A to point B will be an expense no matter what company you use. My advise to you is to get serveral price quotes and then determine which quote will meet your budget. The companies mentioned are very good in terms of DePalm Tours, Wix Tours and KinKini Tours. These buses are air conditioned and comfortable. The fun buses are reconverted school buses and are not air conditioned and not as comfortable. If you are going a far distance, your guests will be dressed up and will feel far more comfortable in an air conditioned bus
That is a very high quote for such a short distance. If you have been to Aruba before you will notice that the Dvi is a short distance to town. The civil house is located right in the town behind the main street. The large hummer is a new mode of transportation in Aruba and I believe is owned by a car rental company. For those of you that do not know, bringing automobiles into Aruba receive high import taxes. Most likly that is the reason that you received a high quote. There are small bus companies that hold up to 26 persons, are air conditioned, comfortable and charge by the distance from point A to point B. I could see the higher rate being charged to drive round trip to the civil house from Palm beach area (Marriott, Holiday Inn, Hyatt, Occidental Grand, but not from the Divi. The hummer is lovely idea and sure your guests would be impressed. However, if it is not in your budget, I am sure if you looked further, you would find a nice mode of transportation that will be affordable.
What about Kukoo Kunuku?? They also do transfers in their open air bus - and it always looks like a great time. A few days before my wedding we saw a bride (and all the guests) getting off the bus at the Phoenix for the reception. Everyone was having a great time and didnt want to get off the bus!