Wheelchair or scooter?

When I travel abroad, I usually hire a scooter for outdoors and an electric wheelchair for indoors.

We are coming to Japan in September and will be staying in five different locations. This means moving a scooter and a wheelchair will probably be too hard.

So, I have rented a Whill model F.

Anybody know if this is suitable for both indoor and outdoor? Is it too big for restaurants for example? Is it too lightweight to move around Tokyo, Hakone, Kyoto and there typical tourist sites?

Or, please can someone recommend a device that would be suitable for both environments and I can rent for when I arrive?

I look forward to your ideas. Thanks.