Withdrawal time
From personal experience, I've found that stopping all intake of caffeine (including chocolate, coca cola and pain killers containing caffeine) for three weeks is long enough to break the tolerance. After this period, I experienced the full effects of caffeine at normal levels...
Well..
You guys are lucky, in my town there's only one coffee house, and some smaller ones who sell coffee besides food. :?
But when traveling in other cities, Starbucks really stands out, and I can imagine that it's easy to get tired of them.
Anyone who wants to give some feedback for my site; it's in my signature.
I know the design is not the greatest, but there's a lot of good information, and I also like the domain name :D
Another tips
I would suggest picking out some of the roasted coffee beans before putting them on the table, and rub them hard between two sheets of linen, or other material of similar fabric, so that you''ll know whether or not it will rub off onto the linen sheets.