My oldest relatives leaving at rural area without Internet access. It should be a common problem for Geni users.
It would be fine to have possibility to go to rural area with notebook to work on Geni's Tree Offline.
Mean time you can print this out http://notablekin.org/gbr/familygroupsheet.pdf
and take some copies with you on the road.
Using family group sheets may be old fashioned but not only holds the info, but gives you a "back up" of the info just in case.
hmm..... I definitely will look on that.