Þakgil in April worth it ?

Hello, We are planning a tour with a campervan in April 2025, but I'm unsure about some details about Þakgil to decide if it's worth it to go there - Is the route doable with a 2WD in this time of the year ? - Are the nearby walking trail open? - Do we need to reserve our spot if we want to sleep there with our vehicle ?

Thank you ! 😁