IANAL, TINLA. If you really need to know, get a lawyer.
In the United States, adult human beings are presumed competent to enter into contracts while protecting their own interests. Ergo, contracts can say almost anything you can imagine and the law will enforce them. Terms of Service agreements are contracts. Ergo...
(There are certain specific limitations to the power of contract. If you want to know more, talk to a lawyer.)
Re copyright: in the United States, compilations of facts are not copyrightable (Feist v Rural Telephone Service) because they do not meet copyright's standard for originality/creativity. So base facts about a restaurant... not covered by copyright. Reviews, however, likely pass the originality test, so scraping them has copyright-infringement implications.