Original sentence: The use of credit cards has, however, rendered them less important than they previously were; there are few places that do not accept credit cards{ (especially international ones such as Mastercard and Visa) but do accept traveler's cheques – in fact, many places now do not accept the latter
Edited sentence: The use of credit cards has, however, rendered them less important than they previously were; there are few places that do not accept credit cards (especially international ones such as Mastercard and Visa) but do accept traveler's cheques – in fact, many places now do not accept the latter