craftgrrl | What Glass Marker/Paint To Use?

Hi Lovely Crafters!
I've been watching this community for awhile but now actually have a question that I haven't seen answered--at least not in the Memories section ...

I'm organizing a banquet for my co-ed fraternity, and am giving wine glasses as a gift for the guests. I thought that maybe to combine the name placeholders and the gift I could just write the names of the guest on the glass. But I've heard glass markers will smudge off if not baked first ... and I guess that goes for glass paint too? I'm not sure, so I was wondering if you guys had any recommendations ... or do I absolutely HAVE to bake all that glass first? (I have about 120 glasses to go through ... :/ )

Thank you so much in advance for any advice you could provide!