Im going to L.A and Las Vegas on vacation for a week in December?

Does anybody have any suggestions on what to do in L.A Im pretty sure I can find plenty of things to do in Vegas. My friend told me that Roscoes chicken and waffles restaurnt in L.A is really good. And does anybody have any suggestions for reasonably priced hotels in L.A or Vegas?? Thanks.

go to the beach its wonderfull there trust me ive been there a million times and go six flag magic mountain its the best park over there