No, the Coopculture service center people speak English as well as some other languages.
In fact, you'll find that more people in the hospitality industry than not speak passable if not even fluent English.
Do you know are these the 'skip the line' you see everyone talk about?
ALL advance tickets for the Colosseum are "skip the line" unless you stand in line at one of the two on-site ticket offices to buy them. It's a marketing ploy so ignore it. And no one AT ALL skips the security check line.
Any idea how big my tour group will be?
Nope, 'cuz I haven't taken it, just keep a finger on it, but I do know that because of the limited area in the underground that groups cannot be too large. Maybe someone who has taken it will chime in here.
I see Get your Guide and Roman Guy have tours that say they skip the
line and are small group, but everyone seems to say they are third
party and yes the prices are much higher. Plus I have seen they
sometimes cancel on people because they were unable to actually
purchase tickets,
True. People who've purchased tours that include the underground from 3rd parties have sometimes had them cancel in the 11th hour. But if interested in not just the Colosseum but the Palatine and Forum as well - those two sites are more complex - a tour which includes all three with a reputable company is recommended, even if it doesn't include the underground. Yes, they are more expensive but they're also longer. You can see down into the underground from places above so so I've personally never thought it worth the pain it takes to try and land THE most in-demand, hardest-to-get ticket of all the attractions in Rome. Just a guess but I've a hunch that 3rd parties are going to have an even more difficult time this year obtaining tickets themselves.
I assume the zero tickets availability at 3am was due to the 3rd party
people buying them all up??
Nope, not necessarily. As I said above, this is THE most in-demand ticket in Rome, and you're competing with many thousands of travelers just like yourselves trying to get hands on them, Yep, many folks stay up half the night, and a fair amount have multiple computers online at the hours they're released to try and do that.
I'm pretty sure you successfully bought the tickets you wanted but let me know?