I don't have an answer for your question. Sorry. Have only been Gold for past 3.5 months.

Are you e-mailing Marriott customer service or the individual hotel? I haven't requested an upgrade before, but recently e-mailed the hotel to request one for my next stay next wk as it is a special event. I haven't had any response yet (it's been about 4 days or so since sending). Thanks for any info.