Do what I do, plan for porn, fastfood and beer. In reality you buy a six pack of your old brand, then drink half a beer with a large cheeseburger. Get queasy from the burger and fall a sleep before you manage to play with yourself. Wake up to find that the dog ate your fries and got diarrhea, which you slept through on account of the beer. Now clean up dog diarrhea with hangovers while swearing that you'll never drink half a beer.
LPT: disable the roomba before sitting down, and make sure that the dog has been walked...
Just to add to this. Take a nice shower, eat something light, wear comfy cloths, and take your trip. Stay safe, enjoy, and have bottle of water with you :)
Mushrooms are sold in head shops in Oakland, California. I understand that to be the case in a number of cities. You may be able to make your way to one of them.
I watch horribly artsy movies or put speed runs on the big TV, blast music aloud, I order a pizza, and I consume the substances you don't find appealing, and I wear the same clothes the entire time without changing
In that situation I make myself a half-rack of pork ribs in the slowcooker.
Wife doesn't actually mind this, she just doesn't care for pork ribs herself and I don't feel like making her a separate meal when I'm indulging my inner carnivore.