I used DTA again at the 1st location I'd been going to. 1 DC FC in the DTA app was reported as being down on the CHAdeMO side. I tried the SAE Combo side over 5 times and couldn't get it to start. Would hit a communications error. I called EVgo to report it while waiting for the Bolt below.
The other DC FC was in use by a Bolt. I talked to the driver and he was surprisingly clueless. He had red HOV stickers which
https://www.dmv.ca.gov/portal/vehicle-r ... ool-lanes/ says were issued in 2018. He was charging up to pretty full (past 90%) and he asked me why it was getting slower and slower. He said he had some long drive ahead of him tomorrow and was trying to get to full. He yielded to me once he hit his 45 minute session limit.
He brought up living in an apartment from our convo, it sounded like he was talking about the stock L1 120 volt EVSE. He said he plugged it in one night and thought it'd charge up quickly. And, it didn't, to his surprise. I explained 12 amps * 120 volts = 1.44 kW vs. 60 kWh battery.
Also, it sounded like he didn't know about the charging networks in the area as he asked me about other stations. I showed him Plugshare and mentioned a few providers. The broken DC FC actually had graphics on screen talking about DrivetheARC, discounted charging ,etc.
The above driver apparently didn't know about DTA and was paying. He pulled out his ChargePoint card so I guess he took advantage of roaming agreement between EVgo and ChargePoint. He might be in for a shock in terms of price (or maybe he is used to it?) The current non-member rate for EVGo in the Bay Area is 30 cents/minute and thus his 45 minute session would've cost him $13.50 with it going quite slow when the session stopped.
I briefly showed him the app, told him about signing up for DTA, EVgo, linking the 2 accounts and getting a promo ticket.
One annoying part is that normally, I receive credit 15 minutes after the charge. I only got credit on my 2nd session ($4.20). The other one ($13.50), I didn't receive credit for.

I verified that for sure I had a 100% promo ticket for that 45 minute session. I ended up calling DTA support to report it. Hope they properly credit me in the end. Otherwise, I'll be pretty pissed as that $13.50 only got my 18.85 kWh since I started at above 55% and let it keep going until I hit my 45 minute session limit.
Also, I've found that once Bolt gets somewhere past ~90% SoC, charging rate slows to about 11 kW.
Interestingly enough, a couple came by walking their dogs looking at the chargers. I talked to them briefly and they said they had a Bolt and didn't know about DTA and the free charging. So, I explained to them, as well. I asked if they had the DC FC inlet w/the orange flap to which they said yes.
I'd been at this location about a week earlier and there was a black gen 1 Leaf (he said he had a '13 SV w/over 130K miles on it) successfully using the charger was down today. He'd been taking advantage of free DTA juice for awhile now. For him, it was more incentive to keep his Leaf. Sounded like he wouldn't still have it if it weren't for the free juice. I didn't look but he said he was at 9 capacity bars now and lived near the charger.
update: Re: credit, I guess my call to DrivetheARC support did some good. I received my $13.50 credit many hours later, at 3 am. Yay!