If im shooting with a second shooter along, its entirely possible to get 2700-3000 , with an asistant, about 2300 in an 8 hour event depending on if he shoots a little too.
I pick out the 300 - 400 - 600 whatever best ones (depending on which package they buy) and only edit them for proofs,
but I have the janky ones of aunt carol sneezing in case they wanted it, I just dont flag it as a pick in lightroom.
I just took a 2400 shot wedding down to 700 shots that are all processed and ready to go, took about 10 hours, it sucked, but you find ways to be more efficient, (lightroom (hint hint. ))
If I am alone and I shoot more then 1600 in 8 hours, then I know im machine gunning a little too much. But thats just me, some people just shoot more shots. theres no right and no wrong. also If your manning 2 cameras it changes things too.