Badrinath Experience: People who are going to badrinath see where we should stay. there are budget option there. bholagiri ashram, parmarth lok, GVML rest house are best.
Food, sight-seeing and shopping: Of course there are few restaurent which serves north .south indian. gujrati food near temple.
Activities & things to do: Always jap karo
Travel tips, How to reach, travel warnings etc: From Delhi avoid to stay in Haridwar, go directly to Srinagar and stay there. early morning leave srinagar and you would reach badrinath in afternoon. you can save your one day.