First off, if you're thinking about La Tomatina, stop thinking and make sure you add it to your bucket list. What a great festival, in one of the greatest areas on Earth! Now when we looked at going this year, we researched the best overall way to make this work, and it worked out very well with a couple of things that we wanted to share to make your trip better -
First off, we reserved through Spaintastic Tours. I'd recommend this company, but I will share some caveats:
a) You need to bring a copy of your physical receipt with you. When the busses pick you up (they have busses that will get your from Valencia, Barcelona and other areas, round trip), you have to show your pass, and you also need it on the return.
b) Don't bother with their VIP packages. There is no VIP, you just get additional "things." In our case, we got food and sangria and a shirt. I thought we'd get first service for showers, lockers, food, etc, and that was NEVER the case. More about that later.
c) Get to the bus area on time. If you're in Valencia, where we were, you can't miss the busses as there are a ton of company's lined up. It was very easy to find our bus.
d) If possible, see if you can reserve a bus to return you as soon as possible after the festival - We had to sit around for FIVE hours waiting for a return bus. There's not a lot to do in Bunol once this finishes, and the Spaintastic party isn't well shaded, and most people are worn out and just waiting to leave. The wait was painful.
e) On the bus, they'll sell you goggles - DON'T buy them on the bus! There are a ton of vendors selling them for 3 Euros the second the bus stops, and on the bus they were 6 Euros. I do recommend goggles for the event, although if you can get the large single goggle from home, it's better that the "multi-eye" goggles they sell in Bunol.

The overall experience was awesome, I just think they could do things a little more efficiently especially for those that pay for VIP. There is no food or drink on either bus ride, so bring your own. They have lockers at the Spaintastic location, but there is a long line to drop off and to pick your stuff up. Bring stuff you can trash after the event. I brought an old pair of shoes and a "throw away" shirt. Swim shorts worked perfectly. I saw people in flip flops but wouldn't recommend them. Once the event is done, they have water trucks that spray you down with a fire hose. Again, there's a long line for this, but it's pretty efficient. Get food on your walk back to the Spaintastic location, because the free food line that you pre paid for can take up to an hour to wait in. No, I'm not exaggerating.

I gave Spaintastic 3 stars mainly because of the long waits, the fact that it was a little pricey for what they gave you, and the long wait for the bus ride home. What I don't want lost in this review was that our tour guide was great, the experience was fantastic, and we'd do it again!

This company provided the worst experience of any that I have ever had, and that is putting it lightly. Lets begin, we left Barcelona for La Tomatina 2014 about 30mins late (not a big deal). Then, the bus got lost, and we ended up almost being late to the fight, in which our tour leader laughingly said, "You guys don't mind running...right" (Seriously?!?!) Then, once we parked, the tour guide had no idea where we were going, in town, to get to the fight, and lead us in circles. We finally decided to break away from our group so we wouldn't miss the fight, and found our own way there by following other people. Once the fight was over, we had been told we would be provided showers to clean up......not so much....we got to stand in line and get hosed off by water tankers. Then, we had to go out into a field to be able to change into dry clothes. Luckily, we ran into people from our bus which helped us hold up towels, so that we could change in a remnant of privacy. Next problem, the location we had been told to meet at for the bus ride home, changed, without notice. We only found out by word of mouth we happened to over hear from other travelers. Then, the buses ended up not being allowed into the town, for almost 90 mins, by the police (we were supposed to leave at 2:00pm and instead boarded at 3:20pm) We were forced to stand out in the blazing sun without shade or water, waiting for them. Once we finally boarded and left, everyone was requesting they stop somewhere soon for water, did they, NO, it was about 2 1/2 hours before they decided to stop, and along the way, the bus driver must have fallen asleep while driving, because he almost rear-ended a car and only came to a screeching stop because a women in the front started screaming Senor, Senor!!!! I can't believe this company was the "Official" Tour company for La Tomatina 2014....it was completely disorganized and they should be ashamed of themselves. Stay Away from this Tour company for your own Protection!!!!