We only have time for one day at universal so can we go to both universal parks in one day on a one day ticket.Sorry for the Disney lingo but I mean can we park hop.
It depends on what one day ticket you have. There is a one day/one park ticket and a one day/two park ticket. The difference is price is around $10. If you only have the one park ticket, you can upgrade to the two park ticket at guest services.