Yeah, kind of tough to give advice without having any idea of your level of experience - but my #1 tip I guess would be -
Bring enough memory cards and battery to make sure you don't end up with a dead camera for either reason, and make sure you shoot RAW.
Even if you don't have any idea what to do with RAW images, shoot RAW+JPG and save the files for later. If it's a very special trip that you might never repeat, you don't want to miss out on the fantastic image quality that you're paying for with a full frame camera and L glass.
Post processing is so important to the final image, and the PP software just keeps improving year after year. I really enjoy revisiting my old RAW images from years and cameras past, and giving them the treatment with the latest processing software and my always improving processing skills - it's like traveling back in time and giving myself a better camera back then.
You can also simulate having a wider lens than you do (and 24mm is a nice classic wide view) by shooting some overlapping images and then later blending them on the computer ( 'stitching' photos). Just shoot in manual so the exposure doesn't change between images, and overlap by 1/3rd or so.
