I booked a 7 day rental for our upcoming trip WDW/Dream cruise in March
through Dollar. I normally prefer National because of Emerald Aisle ease of pick up but prices were too high. Got a decent rate through Dollar at MCO and booked a fullsize but am wondering if Dollar Express registration is worth it for ease of pick up and drop off? Can I do this after having booked and adding existing reservation?
Thanks for any tips/experiences.

Thanks for any tips/experiences.