We just did this a few weeks ago.
We played every match play and free slot play at each downtown casino in both the ACG and MRB (only exception was the D FSP as we didn't have time to play enough to reach the requirements for the FSP).
All were easy to do, no hassles at all, really.
All 4 coupons for FSP for LVC and Plaza need to be turned in at the Plaza and can only be played on slots not Video Poker. Easy. Players club doesn't exist at LVC anymore. We preferred to have it all at Plaza anyway. Just wish you could use in on VP.
MP at Plaza - at table. Easy.
MP's at LVC - at table. Easy. Except at the craps table they would only let us do one each. At the blackjack table, others in the group were able to do both MRB and ACG at the same table.
MP at Golden Gate - relatively easy. Turn in coupon at player's club. Get a voucher. Turn voucher in to cage, get a chip. Play chip and your $25 at the table.
MP at the D - relatively easy. Turn in coupon at player's club. Get a voucher. Turn voucher in at table along with your $25.
New player sign up/coupons at Downtown Grand - relatively easy, turn in FSP from ACG and free cards coupon from ACG at the new player sign up desk. Go to cashier and turn in MRB and ACG coupons for MP's. Get vouchers. Use voucher and your cash as the tables. OK to play both at same table.
Binions FSP - turn in at club, loaded on your card, easy. If you choose to use the ACG burger coupon, you must turn this in at the club as well for a voucher.
Four Queens FSP - turn in at club, loaded on your card, easy. If you choose to use the ACG coupon for 2/1 at Magnolias, you must turn this in at the club. MRB same coupon at the cashier after you eat.
El Cortez FSP - turn in at club, loaded on your card, easy. MRB only. They used to have ACG also, but they don't anymore. Café coupon is turned in at Café if you eat there. We had great pastrami reubens.
It would be a longish day doing all the coupons at once (we are a group of 4). We split it into 2 days in deference to 2 in the group that are older/mobility challenged a bit. I would recommend day time rather than night time to avoid longer lines, crowded tables.
Happy to answer any questions regarding these in case I didn't cover it above.
Cheers,
Deanna