Originally Posted by NCNyrk

Just purchased 2 RT Economy tickets for me and a friend
RDU - MIA AA
MIA - EZE LAN
EZE - IGR LAN Argentina
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EZE - MIA LAN
MIA - RDU AA

We are both plus size...can fit into a seat with seatbelt but it's not comfortable, so the plan was to purchase a 3rd seat to share. When I ask AA to book a 3rd seat, they indicate they can only handle the AA portion, so when I call LAN, they indicated they can't do anything since I booked the ticket via AA.
Any ideas? Could I just buy an extra MIA - EZE - MIA ticket on LAN under my same name (or omit the middle initial, etc)? I can't even seem to assign seats on the horrible LAN website, so with my luck my seats wouldn't be together.

Just thought I'd ask the seasoned travelers here before I give up on having a comfortable flight.

TIA for any ideas or thoughts...