Siam Park Tips for August please

[Homebody1976]

Hi, booked Tenerife for 1st 2 weeks Aug '25 and looking to visit Siam Park. I know it will be rammed, and I'll purchase tickets in advance then fast passes on the day if our budget allows! Few questions:

1. If we head for sunbeds 1st, how do you 'claim' them for the day? Do towels get moved / stolen?
2. How much are lockers and is it card or cash?
3. Can you take phone in waterproof case or go-pro on rides?
4. Tips for order of rides?

Hotel (Waves Las Dalias) is supposedly 10-15 walk away so plan to arrive early.

I’ve never had a sunbed but they seemed to be claimed with towels.
Lockers are about 7 euros I think. You can definitely pay by card, not sure about cash.
You can take a waterproof phone case.
When you go in after the photographer if you head to the right there are shops in wooden buildings, this is a good place to get fast passes and lockers.