Groups can really vary depending on the particular cruise - time of year, itinerary, etc. I've been in one that had 80 cabins and one that had 20 cabins. The one I'm in right now has 29 cabins, but lots of kids, whereas the one with 80 cabins was mostly adults. There's really no way to tell until you join in on one for your particular cruise. Some groups that get over a certain amount of participants (say 20 cabins or so) might then break into different groups and you can choose to give to one group or all groups.
I don't make extras. If the door isn't on my list, it doesn't get a gift. The stuff already takes enough room in the luggage... I don't need extras floating around.
I don't decorate my door. I've gotten one or two magnets from other FE participants as part of the FE gift, but I tend to keep them inside anyway... I wouldn't want them to "walk" away. I do put a little tag on my gift saying who it's from with my first name and Disboard name. Most of the gifts I've gotten in return had the same... but some have no identification as to whom it's from at all.
I wouldn't ever do a glass FE gift, personally. I'd be too worried about breakage and then not having enough to give out. Additionally, you can't be sure that everyone you're giving a glass gift to has a way to securely pack it to get it home in one piece either. That's just me though. I've seen some really lovely glass type gifts.
I made them over a month ago.
