I think we need to run the numbers before making any assumptions. Yes, obviously once you are on the tram it will be faster, thought not warp speed. But the trams will be capacity limited and this is something Disney knows a LOT about. I will do this top down estimates, giving all my boring assumptions at the end to quibble over
Hourly capacity = number of passengers per tram x number of trips
hourly capacity = 144 people x 4 trips =
max 576 people per hour.
Disney Wish has 4000 people, let's assume 75% want off the boat, or 3000 people
TO MOVE ALL THE PEOPLE ASHORE BY A SINGLE TRAM THAT WENT BACK AND FORTH WOULD TAKE A BIT
OVER 5 HOURS, RUNNING NON STOP.
and then its time to go back
see the problem? We can debate how this could be improved, but longer trams and faster trams are probably not likely.
okay so where did I get the numbers from?
Trips per hour: we know the tram Disney is currently running goes roughly 1.5 miles (from satellite map) in 10 minutes, or 9 mph. Disney wont want to go faster on the pier, but lets round it to 10 mph. ... estimates from the ship to the existing tram is about 0.7 miles (with the pier being .5 miles). so okay this would indicate one way on the tram for .7 miles would roughly be four minutes? give it loading and unloading time of 4 minutes each way, a round trip is 16 minutes with loading and unloading. so thats roughly 4 round trips per hour.
People per trip. again from pictures of the existing tram, s well, lets say its 4 seats per row, from images it seems to be 9 rows, so thats 36 people per car. There appear to be 4, maybe 5 cars on the existing tram. thats pretty long for a pier tram, but okay lets go with 4 x 36 = 144 max people moved per round trip. for 4 trips in an hour that would be 576 max people moved per hour.
edit: some will say, how can this be true, people are moved fast enough from the tram loading area to the beach area... yep... but in all the videos they have multiple trams lined up at a time at the station. load one, it leaves, another moves up right away. I don't know how many trams they are running at a time, but during surge period is more than one