I'm not sure how to help with a lot of it but I do have a suggestion for the grout and tiles. Use strips of duct tape. Make a big tape donut with the sticky part on the outside and roll it over the tiles. Don't stick it on and leave it on. You don't want to be trying to remove the duct tape as well. The glitter should stick to the tape. The problem with using a rag is that while some of it wipes off, some of what gets wiped off just redeposits.
Maybe try cleaning the carpet with a carpet cleaner. It may suck up more of the glitter than a vacuum would because of how it sucks the wet back out of it.
Depending on the type of paneling you could try the duct tape trick on there. Or if you are afraid it might be too sticky, try some of the blue masking tape used for marking off areas to be painted. It is made to stick but not as well and is made to come off easy. It might take off more at a time. Also, if the paint part of it is still on there, you might want to try some of a product called Goo Gone. It is made to take off glue from tape and such.
Anyhow, I hope this helps. Best of luck.