My experience with Driver Wood is that the site is great (though it's quite paintball-coded) and the facilities are great. The food, while I've never had it, looks fine as well. The marshalls are fine, but mileage may vary; some are great and totally on it, but I've also seen a few are not so great. As an example, I recently had an instance where I saw someone doing some egregious blind fire right in front of a marshall who said and did nothing about it. I will say though that hit-calling is generally pretty decent at Driver Wood. You'll get the occasional cheater, but you'll get that everywhere, and I generally find it's not common enough for me to gripe about it, so it's generally fine.
If you're using an HPA DMR, you'll also be able to take advantage of the fact they have free refill stations for HPA; I see a lot of HPA users at Driver Wood and this is probably one of the reasons as it just makes it really easy to do so. Just... don't join the legions of people who spam the trigger on their HPA DMRs at Driver Wood. I've seen it far more often there than at any other site I've been to in the south.
The main thing I don't like as much about Driver Wood is that it's very... corporate. The AI voice telling me to sign a waiver when I enter, the very business-like management and operation of the site, the multiple other activities going on at the same time like paintball, nerf, and laser tag. It's an outdoor activity centre, not purely an airsoft site and you feel it.
The other thing I'm not as much of a fan of is that they do not cap the numbers at all, which I think links into the above point. Higher footfall = higher revenue, and with the limited number of sites down here they can get away with that and still pull in huge numbers. It's about to get better, because as the weather turns bad you'll see less people coming out for a game day, but through summer I frequently saw game days with over 200 players, which makes the gameplay just not as good. Target rich environment, sure, but it devolves into line battles with very little room for innovative or tactical play. Even trying to fire and manoeuvre is hard because you need to suppress so many positions when there are that many players crammed into the gameplay area.
Also, the game modes just... aren't as engaging as other sites I've been to. They're not bad, but again they're very paintball-coded. King of the Hill, find X and bring it to Y, attack A and then move onto attack B, these are the types of games that I've found are most prevalent at Driver Wood. They're not bad, they're just nothing special.
Will you have a fun day of airsoft at Driver Wood? Yes, you will. It's fine. The site itself being really good and well-built up, plus the game modes being fine means you'll have a fun day of airsoft. But are there better sites out there? 100%.