tentative reservation; tentative booking
A reservation that is not yet confirmed and may be changed or cancelled. Common in travel, accommodation, and event contexts.
I'll make a tentative reservation at the hotel and confirm it later.
There is no cancellation fee at the tentative booking stage.
本予約 is a firm, confirmed booking, in contrast to the tentative nature of 仮予約.
Compound of 仮 (kari, 'temporary') and 予約 (yoyaku, 'reservation').