That's not a dumb question. I still worry about the same thing when I bring them in. The main problem with having them inside is that bugs sometimes come in with them. Frogs...all kinds of moving things. When I have a cattleya I want in the house, I have decorative pots I sit them into. It keeps your tables dry and generally keeps things inside the pot. When you need to water you will want to leave it outside for a little while so it can drain properly. I've seen a few people that use baskets and decorative moss with several different plants in bloom for a display and they are amazing displays. Just make sure you do not sit a plant directly under or next to a vent. Heated air from a furnace or chilled a/c air will cause bud blast and your plant will start looking sick. You can use a small fan for air movement if necessary, and for phals you will want to find a spot that isn't too sunny or the leaves will burn. I love having plants in the house...it is also good to keep new plants segregated anyways so you can see if they have bugs. New plants almost always come inside for a few days at the very least.