The mask, for me wasn't exactly a nice experience. But needs must and all that hey?! My mask was made of lattice-like plastic, so it left my face looking a bit like a collinder when it was taken off. With kriis-kross patterns on my nose, cheek, forhead and chin. By the last week of R/T i'd lost so much weight that it didn't have that effect anymore. I guess i kind of got used to it. I'd just drift off in m mind, it helped because in the R/T room the ceiling had pretty pictures & i'd imagine myself under the blossom tree or sitting in the field.
My main issue was with being sick. Because i vommited every day for about 3months i was terrified i was going to do it with the mask on, and i'd end up drowing in my own sick and noone would help me! Crazy i know! Thankfully i managed to hold off being sick until they'd unclip me and i'd dash to the loo!

And as for the PEG - i wouldn't be here without it!

Good luck!
Michelle