I go on cruises
regularly.
I usually stay
in the least expensive cabin.
Recently, my cabin
was upgraded
for free.
It had a balcony
and was larger.
It will be VERY challenging
to go back
to booking
the least expensive cabin.
Temporary upgrades
WORK.
They will shift
some of your customers
to the more expensive option.
Offer a temporary upgrade
to your loyal customers
as a ‘reward’.
Evaluate the results.
Expand that marketing
if you see positive results.