If you setup your equipment properly and stay within recommendations for your equipment (as far as obstacles , distance, and interference) then your connection should be very stable, even in rain and fog or snow. Depending on how you mount your equipment and what type equipment, you should get years out of it before it needs replacement. If it is in a very harsh environment you may get only like 1.5 years where if it is in a more normal climate you may get 5 years (or more). Where P2P Wifi used to be sketchy unless you spent a lot of money, you can now get equipment for less than $100 per side that is very good and should last years. At my work we use a P2P wireless connection to another building that we put up in 2007. Since then I...