It's very easy to use for your guests as well! The interface can be confusing at first but once I learned it all worked great with no problems so far!! There are some small bugs here or there when using online payments like PayPal though which have been fixed by now (so not really an issue anymore). But overall this software works perfectly fine if used properly :) Great product - we cannot live without our booking engine right know :D We've had several other systems over time before switching back again only because of price-wise reasons ;).