Hi Sbrinz ..... thank you for this post. I visited Kommandoposten Heinrich (Hondrich) yesterday...it was awesome. By the way, I came to know that these forts are privately owned/maintained by associations formed by a group of people. So rest of the year if anyone feel like visiting them just call up on the numbers provided on websites to make up appointments. They charged me 5CHF for entrance at Kommandoposten and an english speaking voluntary guide accompanied me at no additional cost.
This user would like to thank seawolf for this useful post:
I went to Beatenberg with 5 friends. There were maybe one hundred visitors altogether. Our group of 10 people were charged SFr 10 each, our guide was the caretaker. He didn't tell us very much and the tour took 2 hours, it was interesting though.