Hi there Harriette - welcome back to
planDisney!
I'm so glad that you've stopped by to ask us another question as you plan for your upcoming trip this month! You've picked a great time to visit - the
Walt Disney World 50th Anniversary Celebration is in full swing with exciting new attractions, entertainment, food, and so much more!
As a planDisney panelist, I get a lot of experience using the various acronyms at Walt Disney World Resort, but I can't seem to find anything that lines up with the "DSL" acronym in your question. Since you mention an Advance Reservation, I'm going to go out on a limb and guess that you might be referring to the
Disability Access Service (DAS) Advance planning option. If not,
please submit another question with a tad more detail and I'd be happy to help!
As part of the new DAS pre-registration process, you are eligible to make up to two DAS Advance reservations per day, in addition to requesting the standard DAS Return Times for attractions and experiences once you are in the Theme Parks. Currently, there is not a way for Guests to modify their already made DAS Advance reservations on their own, but don't fret, this is something that you can do once you've arrived at Walt Disney World Resort.
I suggest visiting a
Guest Relations location within a Theme Park - there are locations both outside and inside of the entrances. Or, you can find Guest Experience Team Cast Members stationed in various spots within the Theme Parks - they can help in the same way! You could also
call ahead and try to get this modified, but in my opinion, it will be much faster to just take care of it during your visit. Just make sure that any Guest you are adding to your DAS party is already linked to you as Family & Friends in your My Disney Experience account!
I hope this information is helpful! Have a magical vacation and
please let me know if any other questions pop up that I can help with.
Ryan J.