We have a dinner reservation at Rosa Mexicano (note it's not Rosa's) in January, which we booked via
MDE, and here's a copy and paste from the confirmation email (bolding added). I expect they'll do the same for any reservation at any time of day, not just dinner.
An Important Message
This location does not participate in any of the Disney dining plans and does not accept MagicBands, Disney Gift Cards or any other Disney stored value cards—such as Disney Dining Cards—as forms of payment.
Also note, there's a fee to park at the Walt Disney World Dolphin Hotel, which will be waived if you're having dinner at this location. Dinner Guests, please present your parking ticket for validation. Hours of operation are subject to change.