[sganesh]

Its all about communication with your current and future clients. Depending on the no of clients you have, send them all an email or call them individually. Let them know, that you're going on adventure, why that matters to you, and you won't be available for that period. Thank them for their patronage and give them a 10 to 25 % off of a future bill. For the future clients, set an auto reply message doing the same, and contact them personally when you get back. In short, be honest, prepare and execute.

[mattvot]

Thanks, good ideas. I think notifying clients is the best thing to do. The thing I'm most worried about are technical issues, and not being able to resolve them fast. Hiring a freelance developer to cover the shift could work.