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 Zhumell camping chair reference transport AstroScan ETX-125 Eyepiece Focuser alignment car laser mirror plywood Astromist Electronics FOV Photography apperture collimator diameter finder handle telescope weight AFOV Adaptor Barlow Celestron Clockdrive DSO GSSP Imaging PDA Photoshop Refractor Specs Televue Wide Field Windows about balance ball carry catalog cleaning counterweight cradle dark adaptation dew dob finderscope focal gain goto green laser 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 telrad tips tracking travel zoom