We came here because Jungle Jim's up the street wasn't open yet during the week, and enjoyed it. Prices are cheaper (for adults, considerably; for small kids, a bit), but there's a reason. The kiddie pool was smaller but fine, and if all you are going to do is watch your kid splash around, it's a great option because of the cost. But the amenities are not as nice: the food stand was just OK, and the facility needs more bathrooms and indoor showers that are real showers. But if you are an adult, I'd go to Jungle Jim's, where the lazy river and slides were much better and there is much more space to hang out. On the other hand, Jungle Jim's probably gets much more crowded. Overall, Jungle Jim's facility seemed to be in better shape and the staff seemed more professional and attentive. But I wouldn't hesitate to go back to Midway Speedway if that were the only alternative.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.