wifi issues

Thanks for the suggestion, Martin, but without going back to that hotel, it'll be hard to tell if that's a fix.

I tried just about everything suggested in this thread except deleting the Marvell device in Device Manager.  I tried cold boots.  Tried "forgetting"  Tried connecting to another AP and then coming back to the hotel's.   Tried cycling in and out of Airplane Mode.  The problem was not losing Wi-Fi while sleeping.  It was connecting in the first place.  Like many hotel Wi-Fi's, in the room, I have to execute a logon script.  In the hotel lobby, I just had to check on the first page that comes up that I agree to terms of service.  So perhaps I am dissing Wi-Fi when it's really the handling of hotel web pages in IE10 or IE9 on the Surface.  The standard tech advice from the hotel was go to www.cnn.com, whereupon I was supposed to get redirected to the hotel's series of logon web pages (3 web pages in succession of agreeing to TOS, rates and payment method, then room identifying information and registrant's last name.  Even when I could see the hotel page's link replace www.cnn.com in the URL locator, the first page in the series usually would not come up.  I would usually get Connected with a yellow exclamation mark or Limited Connection to the hotel's 9th floor AP.  The hotel's tech would tell me "it says you're connected.  I don't know why you're not getting the logon page."  Not completing the hotel logon, I couldn't browse anywhere else, read e-mail, etc.  My Android phone would promptly get the web pages and allow me to complete the logon.