Growing up I was taken to other churches by non-jw relatives during court ordered visitations.
I have attended and did Sunday School in Episc, Southern Baptist, Presbs, Catholic, Non-denoms, Assembly of God, Lutheran and the Church of Christ.
When I was little I was determined to spread seeds of troof.
Now I see that for most in Christendom worship is personal and the rest is fellowship and upbuilding.
The WTS would do well to learn a thing or do about fellowhip, upbuilding and charity from them too.
I associate with a wide variety of beliefs but mostly spend my 'worship' time in the SB and KH... save Wed afternoon and then I am at the Lutheran's for my child's weekly worship and bible lesson class...... (the woman pastor is delightful)
My kids do VBS at many of the different churches each summer with their friends....(last summer a couple of KH kids did too!)