Depends on the song. Some songs I love but are just situated where I'd have to mix or it's uncomfortable to sustain notes in that range. For those I can joke around and sing the lower parts of the song in my upper range, then switch to a lower octave for the higher portions. Other songs where I just want to sing and entertain my friends, I make sure it's a song that's in my range. Other songs that are well above your range you can get away with singing in a lower octave.
There are some karaoke places where you can change the key, though. So I try to take advantage of that when available.
There are some karaoke places where you can change the key, though. So I try to take advantage of that when available.