Overall good experience. We had pre-booked an SUV with insurance waiver and booster seat. Our vehicle was brand new and exactly the make / model as required. Once we were being served (Mr Armfelt?), the process was very quick - we had the keys in 5 minutes, and this includes an additional purchase of tickets for the storebælt bridge crossing.
One star removed as the wait to be served was excessive. We were third/fourth in the queue and the wait was between 30-40mins before being seen, which was way too long.
But overall, a good experience and would definitely return.