Yes, you can do this but note, you will only be able to purchase your iLL$ when the ride's return time is after 2pm. It used to be you would automatically get times after 2pm if you were hopping but it changed in August to "level the field". Make sure you note in
MDE that you plan to hop and add which park you plan to hop to and set your preferences. Depending on how busy it is/time of year, you may not be purchasing right at 7am as it can be a little bit of time until return times show up that are after 2p. Also, you may know this but it's 7am for resort guests, non disney resort guests book iLL$ at park opening.