If I drank about 2.5 liters of vodka and 30 beers over a week period, and the last day I drank was Tuesday night, would an EtG test be positive the following Wednesday(as in 8 days later)? My question is does the amount of alcohol and length of the drinking affect the EtG test, or is the general ~80 hours (depending on the individual) apply, regardless?

It metabolizes at the same rate - only difference is if there is organ damage from drinking. For example, liver damage -

As in liver damage would cause it to metabolize slower, or you just mean possible health problems?