You don't have to force your way in,the attendant at the merging point will stop the normal line for you to go.After that you have a choice to go left into the front row line or right for the line for rows 2 and on.
This year has be insane line wise,when I went it wasn't horrible in the last week of September but a lot of reports have been saying waits are averaging 2 hours and The Walking Dead house usually being at 2 1/2 hours.Insane.
Edit:Universal just announced the park is closed to anyone without tickets previously bought,they are sold to capacity for the first time since before 2006...