1 night rent is $165. It's OK for 2 nights but for 3 nights it's cheaper to UPS it back and forth.
Add up your accessories and make a decision. My ASB (Astronomer Survival Bag) alone weights optimisticaly 30 pounds!
Some islands have Star parties though: http://www.keasa.org/index.html
DIY Newtonian OTA collimation 3D Print Eyepiece Zhumell camping chair reference transport AstroScan ETX-125 FOV Focuser alignment car cradle laser mirror plywood AFOV Astromist DSO Electronics Photography apperture collimator diameter finder green laser handle telescope telrad tips weight Adaptor Barlow Celestron Clockdrive GSSP Imaging PDA Photoshop Refractor Specs Televue Wide Field Windows about balance ball carry catalog cleaning counterweight dark adaptation dew dob finderscope focal gain goto haul heavy height hoping hopping length limit magnet magnitude map motion mount objects list observing phone ratio red dot resolution simple size sky spherical star test tracking travel zoom