gezzuzz

i know this is not a question about aadvantage but i could use some advice from some experts with aa..

my fiancee is moving to the usa from chile... between the 2 of us we get 4 checked bags... i was thinking instead of buy extra luggage for 2 bags use coardboard boxes... while in the usa we can go to walmart and get a cheap $20 bags in chile it will cost $50 for a cheap bag that we will never use agian...

so what happens if we use cordboard boxes? what happens if they decide to open them... will the seal it back up? i will stay under 50lbs.. and only put clothes and some books maybe where they can clearly see whats in it thru xray.. trying to limit the need to open them...

what if i check a empty bag on my way to chile... should i but something in it?

thank you