I've just had a regular job come in for Prezzo in Newquay.
They want the inside doing once a week but the panes of glass are huge, the biggest I've had to squeegy.
Any tips on squeeging large panes? I'm afraid I'm a bit of a wfp junkie so don't have a huge amount of experience with the squeegy! 
It's the one on the far left.
We use 3 Unger Teleplus aluminum poles, cone adaptors, 1 x applicator, 1 x 0 degree Unger swivel squeegee and 1 Unger FIXI system clamp with a cloth for detailing.
Son uses the applicator and I squeegee whilst he catches most of the squeegeed water with his applicator. He then follows along with the FIXI clamp and towel and details the edges.
One set of glass panels we clean are 30' high (length of glass panel about 12') and the others are about 35' high (length of panel about 25'). It takes a bit of practice. The 30' height panels takes us an hour to do and there is 9 of them. The others take 2 hours and there are 12 of them.
Fairy liquid doesn't work at those heights due to the amount of detailing that needs to be done. We use Bio-Kleen Heavy Duty Degreaser from JSK Eco Solutions, Ireland (Cork 021 - 4318545). It is a concentrate and they recommend mixing it 1 part solution to 10 parts water. We found it worked better that those heights with 1 part solution to 20 - 25 parts of water. It cleaned just as well but made detailing easier.
We followed the same principle as per this video.
https://www.youtube.com/watch?v=ODg_gZ53v0UWe mentally divide the glass into 3 sections and do 3 panels at a time. Lower the poles and start back on the first panel and do the second third. We then do the bottom section. There isn't much space for doing it any other way.
Human traffic is a consideration so whilst son is applicating I watch for people entering and exiting the building and he does the same when I'm squeegeeing.
We also make sure that our warning signs are well placed and very visible for any person in the area to see.
This job is a leisure center and we start at 6am when they open. We try to do the area most effected by the amount of foot traffic first thing and have to be finished before 8.30 as this is when the coffee lounge opens.
The 9 large glass panels are in the swimming pool area and we go back and do them from 9 to 10pm that evening when the center closes.
The only issue you may have is if the glass sections are boxed in. Whilst you can clean the glass easily, cleaning the 'sill' is more difficult.
We have a large 35' high atrium we do on another job and this is the problem we have on the inside. Whilst I can clean the windows we have to use a scaffold tower (provided by the customer) to clean the very top windows due to the internal roof support structure, and the bottom window box sections.
Another cleaner uses wfp inside the atrium of the office block he does at a chemical company nearby. He puts down water absorbant mats and they use a wet and dry vacuum to vacuum up the water as necessary.
We can't do this in our two jobs due to electrical cabling with lighting, exit doors on security alarm senors and electrically operated sliding doors.