Dramamine® Original Formula has the same active ingredient as original Gravol - Dimenhydrinate 50mg. See
https://www.dramamine.com/motion-sickness-medicine/dramamine-original-formula
Dramamine® All Day Less Drowsy has the same active ingredient as Bonine - Meclizine HCI 25mg. There is currently no equivalent for sale in Canada because although meclizine is allowed to be sold in Canada no company is currently marketing it in Canada; the last one to do so stopped a number of years ago. See
https://www.dramamine.com/motion-sickness-medicine/dramamine-less-drowsy
OP: the above links include pictures of the packages, so you know what to look for in stores. I'm pretty sure I have seen it in WDW resort hotel gift shops -- if not on the shelf, ask as they may have it behind the counter or in the back.
If you can't find it at the airport or hotel, an option is Turner Drugs (
http://turnerdrug.com/ ). The cost is higher than buying it yourself at
Walmart, but there is no minimum order cost and their delivery fee is reasonable. They do same day deliveries within a few hours during their delivery window. We used them during our last trip for some medical supplies and medication we couldn't get through other services and were quite pleased with them. They delivered to the front desk, but there was no $5 fee from the hotel.
SW