I always say - get a good mask fitted properly from a dive centre over here, budget for around £30. One with tempered glass lenses; and ask their advice on how to prepare it for use. You really will appreciate it when it doesn't fog up or leak - you can enoy your snorkelling so much more.
If any of you need glasses then masks with prescription lenses are available - but cost about £70.
Then get any cheap snorkel tube and a pair of cheap slipper fins from a beach shop. Perhaps even buy a cheap kit in Sharm and throw the mask away (it'll probably have a plastic lens that steams up all the time whatever you do).
If you enjoy snorkelling a try-dive really is a "must do" while in Sharm...