I travel with my bike a minimum of 4 times a year and it really is no big deal but I understand the desire to rent. But since my whole reason for the trip is to ride I want my bike. It takes me approximately 30 minutes to pack or unpack my bike and after at least 35 trips have yet to have a issue, when you include my wife or friends who have traveled with that would make at least 125 flights without a problem.
When going point to point I pack in a used cardboard bike box and return just using the bike bag the airline provides. My theory the handler’s see it’s a bike and treat it accordingly.
I also have a soft sided Biknd beige case use that for round trips.
Presently in Laos/Vietnam with wife using our Diverge gravel bikes never gave it a second thought to bring bikes.