Enviro would be a good dept to go into, if you're that genuinely interested in working in a theme park atmosphere, this is the most customer focused position on park whatever people say.If you were that interested in the park as a good job, then it would have been advisable to take the offered jobs. It sounds like you're doing it just for the sheer 'lol I work on a 205ft rollercoaster' then you will get so very bored so very quickly - you're there to interact with guests, to make their days more enjoyable, to carry out H&S checks on ride vehicles and other equipment, not just for the novelty.Honest opinion, after working in a theme park for a year in a few different departments and also on many different rides - every department/job is as good as you make them!