I really hope your family cares as much about your snake as you do. Otherwise, if they are afraid to go near the tank your snake will not get food and water, and 2 years is just a little long to go without some type of cage cleanup. The smell alone after 2 years would be enough to drive you out of the house.
Do yourself (and your snake) a favor and just set up a good environment for your snake, use a highly absorbant substrate (carefresh) that is easily spot cleaned and or replaced, give it a couple of hiding spots (hot and cold), a water bowl (oversized so if it's forgotten it can go longer between waterings).
It all depends on how much involvement your family is willing to supply your snakes needs. If they are cool about it and like snakes, no problem. If they are among those that find snakes "icky" then you will have problems.
Best of luck.
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