Flew to Fort Laurderdale three weeks ago. Packed Detector Pro HeadHunter pulse and Wader for this latest trip. They pack easily. Found a lot of soft sand, not much washed out. Did manage a huge silver ring with good stones.
Have flown with Excal a few times. I keep the knob guard on it to protect it in the suitcase. Suitcase carries a travel scoop with travel handle, dive boots, detector, shafts, chargers / batteries, couple of tools and cloths for padding stuff. I normally take two detectors and have frequently been glad I did when some sort of issue comes up with one of the detectors. Couple of years ago, with the Excal, had the battery pod develop a crack and take on water and killed the battery pack; did not have a spare battery pod with me. Had a CZ along for that trip so it got most of the detecting time.
I've got travel handle for scoop and shafts for the detectors that break down to fit into the suitcase. Had not had a problem staying under 50 pounds for the packed bag; although I'm normally only under by a pound or two.
I normally take a picture of the packed bag before the last of the clothing padding goes in so I have some documentation if I ever need to file a claim.
Have not tried shipping to hotel.
Good luck on your trip and I hope you find more washed out areas than I did.
Cheers,
tvr