So, because of your allergies, you'd probably be best advised to avoid the food booths. As of late, they have taken a hard line on modifying food items in ANY way and have told me flat out "if you have any food allergies, we don't advise purchasing any of the items offered if you can't make a determination that they are safe from the menu description." This issue came up over the holiday festival when my son wanted the hot cocoa macaron and I asked for them to simply NOT sprinkle the crushed peppermint on top. He has a sensitivity to mint (not an allergy, it just causes a burning sensation in his mouth that is unpleasant). It was a WHOLE THING, and required asking 2 people and them "making an exception this ONE time." Their line was "the chefs will not allow us to make any modifications to how the food is presented." It honestly rubbed me the wrong way and I wrote in to share my thoughts on how unreasonable this new policy was. I received a response that they would share my feedback with management. It costs them NOTHING to leave off an ingredient while prepping a dish.
The point is, if there is an item that you think is safe, but it has something as minor as a pepper on top, they will literally not just leave off the pepper for you to make the item safe (and I'm talking about things they add before handing you the item, not stuff "cooked in."). They like to put jalapenos on a lot of food items.
As for the beer question, the answer is absolutely YES! There is sometimes more beer than wine options. There is usually an entire beer garden near Paradise Garden Grill. Beer is extremely popular in California, in particular local breweries. Several booths will have beer tasting flights as well. It sounds like your husband likes lagers and pilsners. Unfortunately for him, IPAs, Ales and Stouts rule in the local brewery scene. The majority of beer selections will be these varieties. There will be some lighter options like pilsners and lagers, but they won't be prominent at the booths. They use those to showcase the signature offerings from CA brewhouse. I expect to see a fair amount of hard seltzers on offer this year due to the popularity of those. Brewery X should also feature prominently, as a rising Anaheim brewery and they DO offer lighter lagers and pilsners in addition to EXCELLENT hard seltzers. I know you said your husband doesn't like "fruity" beers, and by that I suspect you mean beers like Blue Moon (wheat beers, which tend to have citrus profiles). However, I HIGHLY recommend he try some of the seltzers offered by Brewery X. They are NOT sweet or overly fruity and are honestly the only hard seltzers that my beer loving husband will drink. They are fantastic! Brewery X is a newcomer to DLR but they have had offerings at the parks both on a permanent basis (Sonoma Terrace and Hollywood Lounge) as well as have been featured in all the recent festivals.