Just want to pop in and give a few DPs, in case they're helpful to anyone. I haven't really been following along, mostly skimming here and there, so hopefully this isn't too redundant.
1. 20% off
Amazon using 1 MR - I was able to max out with Safeway gc ($250). I shop there anyway, so I wouldn't mind being stuck with them.
2. Took Safeway gc and bought Happy gc (there was a $7 off $50 coupon last week?) and Disney gc. It appears POS is not hard coded to disallow gc to gc, but there was 1 store where I saw "approved" on the screen but the cashier caught that I used a gc for payment and cancelled the whole transaction. So its definitely YMMV.
3. Took Happy gc to BBB and bought Disney gc. This is very YMMV. I've had trouble with my BBB before, but thought I'd give it another go since I had to go there to use my Amex offer $5 off $25.
All in all, a successful run $200 spent for $250 Disney gc and $14 remaining for Safeway groceries.
Also, have been seeing all the reports of issues with self-referral. I'm in P1 mode, and looking to get both Hilton Biz and CIP in Aug/Sept. Hoping to work off my 4 MSRs by late Aug. If anyone want to trade links, PM me.