Absolutely, welcome. As the other comment mentions, please follow generally observed code (no footwear, photography inside main temple, etc)
Yes, you are very much welcome to attend. The services (called Pooja) is usually in evening. A jeans and shirt/t-shirt should be good enough attire.
Yes. There is nothing stopping you from attending the service. Just please ensure you are dressed decent, you may want to go through the dress code on the temple website.
Sure
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