MAC cloning simply makes your router appear to be your notebook from a network standpoint. No issues and the hotel's network won't ever know the difference as the MAC is all it has to go on. You don't need to bridge, you can use the router as a router... I've had to do this once to get my router working and never turned MAC cloning off... haven't had an issue since.

As for the 25' long Ethernet cable... that makes it a wee bit tough to use the notebook and WiFi SIP phone at the same time.