Yes park to park means you can go from one park to the next with express pass skipping in line, it's worth it because the lines times for waiting this weekend was 45 mins to 95 mins without express
$181 for park to park meaning you can jump from one park to another or $279 for park to park and express where you can skip the lines and go to the same park
$115 for just universal studios and $170 for universal studios and aventure islands in one day
Thanks! Your answer is awaiting moderation.