With no way to save it? Too much of a risk of accidentally closing the tab, IMHO.
Especially if OP is still on his trip, and doing it from a phone or laptop which he may have to turn off sometimes.
True, there is no way to save it. But on many phones/computers (probably only laptops), the tab will stay open even if you were to close the device.
But yes, (especially that it will be many days worth of work), I wouldn't want to trust it.