Well, if you can't get over your hatred for the police, I would strongly advise against becoming an explorer. You will be working closely with officers as an explorer.
Now, to answer your question. I have been an explorer with the US Border Patrol for 3 years, including 2 years as Patrol Explorer in Charge. I'm going to tell you about my experience, so this might not apply to your local agencies.
All explorers go through 3 months of training, which includes instruction in laws, USBP history, CPR, basic tactics, PT and other fundamental skills.
We have several types of uniforms, including a dress uniform (for ceremonies and public events that do not require us to get dirty or sweaty) and a rough duty uniform (post t-shirt or polo shirt with BDU pants, for normal meetings, competitions and public events that require us to get dirty or sweaty.)
All explorers are issued a leather duty belt, 5 keepers, a holster (for training red guns), a handcuff case and handcuffs, a radio holster, training pepper spray and a spray holster, and a badge and badge holder. We are allowed to buy additional gear at our own expense, as long as it is approved by the advisors. For example, I wear concealable body armor under my uniform any time we are in public or at the range.
As for the scenarios...at my post, we do all types of scenarios. I like to break them up into 3 types:
-Patrol scenarios, meaning scenarios that a patrol officer would encounter. Stuff like traffic stops, responding to 911 calls, robberies in progress, active shooters, etc.
-Tactical scenarios, meaning scenarios that a tactical team would encounter. Stuff like search warrant service, narcotic buy/busts, hostage rescues, active shooters, crisis negotiations, rapid deployments, terrorist attacks, tubular assaults, marijuana field raids, etc.
-Border Patrol specific scenarios, meaning scenarios that only USBP agents would encounter. Stuff like immigration checkpoints, dealing with large groups of suspects with a small amount of officers, etc.
The scenarios are a lot of fun and a huge adrenaline rush. My post goes the the Chandler Tactical Competition every year in Chandler, AZ. I will always remember a few of the scenarios I did there. The rapid deployment started with our team driving to a fire station. When we got there the judges (members of Chandler PD's SWAT team) were waiting with a U-Haul truck. We got in the back, and one of the judges briefed us on the situation (shots fired at a middle school) while we drove to the school. When we pulled up to the school, we jumped out of the truck, formed our stack, and moved to the front gates. As we approached, 3 people ran out screaming, We ordered them to the ground, and discovered that one of them was carrying a pistol. He was handcuffed and left for responding officers to deal with. As we moved into the school campus, we saw many students (who has been recruited as actors from the local high schools) that had been shot lying in the grass. A man with a gun was pointing it down a hallway. We ordered him to drop the weapon, but he showed us police credentials, so I instructed him to cover the entrance, in case any other shooters tried to sneak up on us. We advanced down the hall, past more wounded and dead students. My point man, who was carrying a tactical shield, noticed a trip wire leading to a bag. We carefully stepped over the wire and entered a classroom. As we entered, a shooter jumped up from behind a desk with a shotgun pointed toward us. We shot him (yelled "Bang, Bang") and his accomplice who charged at us from another door. With that, the school was declared clear and the scenario ended.
Another scenario we did was a tubular assault on a train. Hostages had been taken on two cars of the train, and we had to rescue them. It was about 8:00 at night, so the police brought giant spot lights to light up the train. As we approached the train, shots were fired inside. The first assault team moved to the passenger car as the second team moved to the back of the caboose. The second team encountered a bomb rigged to the caboose door, so the first team entered the caboose while the second team provided perimeter security. The first team encountered a hostage and a terrorist. They dropped the terrorist when he reached for his cell phone, because the hostage was screaming about a bomb in the train. They then entered the passenger car, and neutralized two armed terrorists in the aisle and private room. We then pulled all the hostages off the train, searched them, and ran them out of the danger zone. The whole thing felt like a movie, but also very real, because of the spotlights, and the realistic acting, clothing and tactics the assault teams, terrorists and hostages used.
I would suggest joining the Explorers, as long as you go into it with a good attitude, and good reasons (like serving your community and imporoving yourself) and not just for the adrenaline rush.