We did the segway tour in August and it is great fun. However it does make your feet hurt. You have regular stops to step off and rest, but we needed to have a longer rest once we had done as our feet were really aching. We have done several segway tours now and this always happens. If your friend is low on energy he might want to skip it. Having said that, throughout the tour there is always the option of dropping out if you need to.